title
Prolog Tutorial
description
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Installation 01:08
Introduction 05:40
Facts 09:55
Rules 12:00
Variables 15:30
If Statement 23:54
Complex Terms / Structures 25:56
Format 28:38
Comparison 31:13
Trace 33:36
Recursion 36:16
Math 39:10
Reading / Writing Console 44:08
File I/O 46:10
Looping 49:29
Changing the Database 53:31
Lists 56:51
Strings 1:00:47
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detail
{'title': 'Prolog Tutorial', 'heatmap': [{'end': 3514.857, 'start': 3472.726, 'weight': 1}], 'summary': 'The 《prolog tutorial》 comprehensively covers prolog basics, installation on mac and windows, defining predicates and rules, using prolog predicate and structures, complex terms, trace and rules, programming features, math functions, file operations, database manipulation, lists, and string operations, with practical examples and clear explanations.', 'chapters': [{'end': 30.931, 'segs': [{'end': 30.931, 'src': 'embed', 'start': 0.114, 'weight': 0, 'content': [{'end': 2.735, 'text': 'Well, hello, Internet, and welcome to my prologue video tutorial.', 'start': 0.114, 'duration': 2.621}, {'end': 9.178, 'text': "In this one tutorial, I'm going to cover pretty much everything you would read in a standard prologue book in one video.", 'start': 2.755, 'duration': 6.423}, {'end': 15.741, 'text': 'Because many of you guys have told me most of the books on prologue are very poorly written or are hard to understand.', 'start': 9.298, 'duration': 6.443}, {'end': 22.944, 'text': "I'm going to specifically emphasize numerous examples on prologue to clear up the language and make it very understandable.", 'start': 15.741, 'duration': 7.203}, {'end': 27.488, 'text': 'In the description underneath the video, I have timestamps for all the different parts of the tutorial,', 'start': 23.204, 'duration': 4.284}, {'end': 30.931, 'text': "so you'll be able to click on them and go to directly whatever you want to learn.", 'start': 27.488, 'duration': 3.443}], 'summary': 'Prologue tutorial covering all standard content with multiple examples and timestamps for easy navigation.', 'duration': 30.817, 'max_score': 0.114, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs114.jpg'}], 'start': 0.114, 'title': 'Prologue tutorial', 'summary': 'Covers a comprehensive tutorial on prologue, addressing the issues with existing literature, and providing numerous examples to enhance understanding, with timestamps for easy navigation.', 'chapters': [{'end': 30.931, 'start': 0.114, 'title': 'Prologue tutorial: clear and comprehensive', 'summary': 'Covers a comprehensive tutorial on prologue, addressing the issues with existing literature, and providing numerous examples to enhance understanding, with timestamps for easy navigation.', 'duration': 30.817, 'highlights': ['The video tutorial covers everything in a standard prologue book in one video, addressing the poor quality and complexity of existing prologue literature.', 'Emphasis is placed on providing numerous examples to clarify the language and make prologue very understandable.', 'Timestamps are provided for easy navigation to different parts of the tutorial.']}], 'duration': 30.817, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs114.jpg', 'highlights': ['Emphasis is placed on providing numerous examples to clarify the language and make prologue very understandable.', 'The video tutorial covers everything in a standard prologue book in one video, addressing the poor quality and complexity of existing prologue literature.', 'Timestamps are provided for easy navigation to different parts of the tutorial.']}, {'end': 462.603, 'segs': [{'end': 91.723, 'src': 'embed', 'start': 48.623, 'weight': 0, 'content': [{'end': 56.424, 'text': 'And Prolog is going to focus on describing facts and relationships about problems, rather than creating a series of steps to solve that problem,', 'start': 48.623, 'duration': 7.801}, {'end': 58.465, 'text': 'like you might see in another programming language.', 'start': 56.424, 'duration': 2.041}, {'end': 64.546, 'text': "And these facts and rules are going to be stored in a file called either the database or knowledge base, as you're going to see.", 'start': 58.665, 'duration': 5.881}, {'end': 67.747, 'text': "And why don't I jump over and show you how to install everything.", 'start': 64.926, 'duration': 2.821}, {'end': 71.169, 'text': "Okay, so if you're on Mac, this is going to be very easy.", 'start': 68.567, 'duration': 2.602}, {'end': 76.352, 'text': "All you're going to have to do is go to brew.sh and install homebrew.", 'start': 71.209, 'duration': 5.143}, {'end': 80.195, 'text': "That is all you're going to have to do, and you can see all the instructions right here.", 'start': 76.613, 'duration': 3.582}, {'end': 89.021, 'text': "Then what you're going to do inside of your terminal is just type in brew install gnu prolog, right like that, and hit enter.", 'start': 80.375, 'duration': 8.646}, {'end': 91.723, 'text': 'And then, inside of that same terminal,', 'start': 89.301, 'duration': 2.422}], 'summary': 'Prolog focuses on describing facts and relationships, and can be easily installed on mac using homebrew.', 'duration': 43.1, 'max_score': 48.623, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs48623.jpg'}, {'end': 258.059, 'src': 'embed', 'start': 228.263, 'weight': 1, 'content': [{'end': 229.464, 'text': "Okay, all that's installed.", 'start': 228.263, 'duration': 1.201}, {'end': 230.826, 'text': 'Now we have to install Prolog.', 'start': 229.504, 'duration': 1.322}, {'end': 235.55, 'text': "We're going to go to gprolog.org, and there's a couple different flavors of Prolog.", 'start': 230.866, 'duration': 4.684}, {'end': 238.493, 'text': "I'm just using gprolog because that works out best for me.", 'start': 235.57, 'duration': 2.923}, {'end': 240.856, 'text': "And you're going to look at what you want to install.", 'start': 238.734, 'duration': 2.122}, {'end': 245.62, 'text': "You're either going to get one of these Windows versions right here, and everything's going to install directly for you.", 'start': 240.896, 'duration': 4.724}, {'end': 247.622, 'text': 'And make sure you install this one right here.', 'start': 245.841, 'duration': 1.781}, {'end': 250.827, 'text': 'See SigWin over here? And this is going to auto install.', 'start': 247.743, 'duration': 3.084}, {'end': 251.889, 'text': "So you're going to click on that.", 'start': 250.847, 'duration': 1.042}, {'end': 253.351, 'text': 'And then this little wizard is going to open up.', 'start': 252.049, 'duration': 1.302}, {'end': 254.673, 'text': "And you're going to click on next.", 'start': 253.371, 'duration': 1.302}, {'end': 256.637, 'text': "And then you're going to pick the location.", 'start': 255.094, 'duration': 1.543}, {'end': 258.059, 'text': 'I just left it at the default.', 'start': 256.656, 'duration': 1.403}], 'summary': 'Installed gprolog from gprolog.org for windows.', 'duration': 29.796, 'max_score': 228.263, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs228263.jpg'}, {'end': 433.58, 'src': 'embed', 'start': 405.819, 'weight': 4, 'content': [{'end': 412.342, 'text': "Another thing that's going to be important, once you are able to have some things in your database, is you can type in listing and then a dot,", 'start': 405.819, 'duration': 6.523}, {'end': 416.144, 'text': "and it's going to show you a whole bunch of information about the contents of your database.", 'start': 412.342, 'duration': 3.802}, {'end': 421.267, 'text': 'And all of these commands, as well as most of the commands inside of Prolog are called predicates.', 'start': 416.404, 'duration': 4.863}, {'end': 424.29, 'text': "So why don't I do a very simple hello world thing.", 'start': 421.587, 'duration': 2.703}, {'end': 427.914, 'text': 'Again, this is the terminal, this is the text editor, or the knowledge base.', 'start': 424.55, 'duration': 3.364}, {'end': 433.58, 'text': "If you wanted to do a hello world, you could just go right and then hello world and then you're gonna.", 'start': 428.154, 'duration': 5.426}], 'summary': 'Prolog commands are called predicates. the language enables querying a database.', 'duration': 27.761, 'max_score': 405.819, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs405819.jpg'}], 'start': 31.172, 'title': 'Installing prolog & c++ on mac and windows', 'summary': 'Explains how to install prolog, c++, and other languages on mac and windows, providing a simple method for mac users and a step-by-step process for windows users. it also covers the installation process of gnu debugger, make, prolog, and c++ on both platforms, including downloading, installation, and verification, as well as demonstrating the creation and loading of a knowledge base in prolog.', 'chapters': [{'end': 194.731, 'start': 31.172, 'title': 'Installing prolog and other languages on mac and windows', 'summary': 'Explains how to install prolog and other languages on mac and windows, including a simple method for mac users and a step-by-step process for windows users to install prolog and other languages.', 'duration': 163.559, 'highlights': ['Prolog is a collection of facts and rules that focus on describing facts and relationships about problems, rather than creating a series of steps to solve the problem. Prolog is a collection of facts and rules that focus on describing facts and relationships about problems, rather than creating a series of steps to solve the problem.', "For Mac users, installation is straightforward by using Homebrew and running a simple command 'brew install gnu prolog' in the terminal to install Prolog. For Mac users, installation is straightforward by using Homebrew and running a simple command 'brew install gnu prolog' in the terminal to install Prolog.", 'For Windows users, the installation process involves downloading and installing Cygwin and selecting the necessary components such as GNU for Prolog, C, and C++. For Windows users, the installation process involves downloading and installing Cygwin and selecting the necessary components such as GNU for Prolog, C, and C++.']}, {'end': 462.603, 'start': 194.931, 'title': 'Installing prolog & c++ on windows & mac', 'summary': 'Covers the installation process of gnu debugger, make, prolog, and c++ on windows and mac, demonstrating the steps involved, including downloading, installation, and verification, as well as the creation and loading of a knowledge base in prolog.', 'duration': 267.672, 'highlights': ['The chapter covers the installation process of GNU debugger, make, Prolog, and C++ on Windows and Mac, demonstrating the steps involved, including downloading, installation, and verification, as well as the creation and loading of a knowledge base in Prolog. Installation process of various tools, including GNU debugger, make, Prolog, and C++ on Windows and Mac; Steps involved in downloading, installation, and verification; Creation and loading of a knowledge base in Prolog.', 'Demonstrates the process of resolving dependencies and installing all components, followed by a message confirming successful installation. Process of resolving dependencies and installing all components; Confirmation of successful installation.', 'Guides the installation of Prolog, specifically gprolog, on Windows, and demonstrates the selection and installation process, including the use of SigWin. Guidance on installing Prolog, particularly gprolog, on Windows; Selection and installation process; Use of SigWin.', 'Provides instructions for creating a knowledge base in Prolog, including the naming and loading processes, as well as a demonstration of listing the contents of the database. Instructions for creating a knowledge base in Prolog; Naming and loading processes; Demonstration of listing the contents of the database.', "Demonstrates the use of predicates and commands, as well as the creation of a simple 'hello world' program in Prolog. Use of predicates and commands in Prolog; Creation of a simple 'hello world' program."]}], 'duration': 431.431, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs31172.jpg', 'highlights': ["For Mac users, installation is straightforward by using Homebrew and running a simple command 'brew install gnu prolog' in the terminal to install Prolog.", 'For Windows users, the installation process involves downloading and installing Cygwin and selecting the necessary components such as GNU for Prolog, C, and C++.', 'The chapter covers the installation process of GNU debugger, make, Prolog, and C++ on Windows and Mac, demonstrating the steps involved, including downloading, installation, and verification, as well as the creation and loading of a knowledge base in Prolog.', 'Provides instructions for creating a knowledge base in Prolog, including the naming and loading processes, as well as a demonstration of listing the contents of the database.', "Demonstrates the use of predicates and commands, as well as the creation of a simple 'hello world' program in Prolog.", 'Guides the installation of Prolog, specifically gprolog, on Windows, and demonstrates the selection and installation process, including the use of SigWin.']}, {'end': 921.053, 'segs': [{'end': 500.402, 'src': 'embed', 'start': 462.923, 'weight': 0, 'content': [{'end': 465.504, 'text': "So let's come over into our database and let's define something.", 'start': 462.923, 'duration': 2.581}, {'end': 469.826, 'text': "So let's say something like loves Romeo and Juliet.", 'start': 465.624, 'duration': 4.202}, {'end': 473.348, 'text': 'Now what this is saying is Romeo loves Juliet.', 'start': 470.167, 'duration': 3.181}, {'end': 479.331, 'text': 'And in this situation, this is going to be a fact where loves is going to be what we call a predicate.', 'start': 473.548, 'duration': 5.783}, {'end': 484.934, 'text': 'And Romeo and Juliet, these guys right here, are called atoms, which are going to be constants.', 'start': 479.571, 'duration': 5.363}, {'end': 489.516, 'text': 'And also, of course, they are the arguments that are going to be passed into the predicate loves.', 'start': 485.334, 'duration': 4.182}, {'end': 494.499, 'text': "And I might as well go in here and also do a little bit of a brief introduction of much of what you're going to see.", 'start': 489.976, 'duration': 4.523}, {'end': 500.402, 'text': "If you want to define a rule, you're going to use something that looks like this, and that's the same as if we would say if.", 'start': 494.799, 'duration': 5.603}], 'summary': 'Introduction to defining predicates and atoms in a database.', 'duration': 37.479, 'max_score': 462.923, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs462923.jpg'}, {'end': 594.137, 'src': 'embed', 'start': 563.769, 'weight': 1, 'content': [{'end': 568.15, 'text': "And what's great about variables is they are going to allow us to answer questions.", 'start': 563.769, 'duration': 4.381}, {'end': 574.972, 'text': "So if we want to find out who loves Romeo and we don't know, we can just ask our terminal and it's going to come back with Juliet.", 'start': 568.27, 'duration': 6.702}, {'end': 580.974, 'text': 'And those are the basic things you really have to understand about Prolog to really get to understand the language.', 'start': 575.172, 'duration': 5.802}, {'end': 588.375, 'text': "It's really a simple language that does certain things extremely well, but it is very easy to get confused by it,", 'start': 581.094, 'duration': 7.281}, {'end': 594.137, 'text': 'because you may be used to other languages in which everything is done in a step-by-step manner.', 'start': 588.375, 'duration': 5.762}], 'summary': 'Variables in prolog facilitate answering questions, making it a simple language with certain strengths, although it may be confusing for those accustomed to step-by-step languages.', 'duration': 30.368, 'max_score': 563.769, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs563769.jpg'}, {'end': 775.934, 'src': 'embed', 'start': 745.093, 'weight': 5, 'content': [{'end': 746.274, 'text': "as you're going to see in a second.", 'start': 745.093, 'duration': 1.181}, {'end': 752.137, 'text': "so let's say that we want to say that Albert runs under certain circumstances.", 'start': 746.274, 'duration': 5.863}, {'end': 759.282, 'text': "so we're going to say if we're going to say Albert is happy and then follow that with a comma, and then actually that's enough.", 'start': 752.137, 'duration': 7.145}, {'end': 763.524, 'text': "so let's just put a dot inside of there and you can see in fact that that is going to be true.", 'start': 759.282, 'duration': 4.242}, {'end': 769.648, 'text': "load our database and let's check if Albert is running and you can see that Albert is running and that is a rule.", 'start': 763.524, 'duration': 6.124}, {'end': 771.769, 'text': 'that is a very simple rule, but that is a rule.', 'start': 769.648, 'duration': 2.121}, {'end': 775.934, 'text': "We're also going to be able to check multiple conditions, as I was just going to show you there a second ago.", 'start': 771.949, 'duration': 3.985}], 'summary': 'Demonstration of using conditions to determine if albert is running in a database.', 'duration': 30.841, 'max_score': 745.093, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs745093.jpg'}, {'end': 832.129, 'src': 'embed', 'start': 802.484, 'weight': 6, 'content': [{'end': 805.185, 'text': 'So you should get it and use it as a cheat sheet or something like that.', 'start': 802.484, 'duration': 2.701}, {'end': 810.545, 'text': "We're also going to be able to come in here and define our own predicates to keep our commands brief.", 'start': 805.384, 'duration': 5.161}, {'end': 818.526, 'text': "So let's say something like, does Alice dance? And then we're going to say, if so, does Alice dance is going to be our predicate.", 'start': 810.585, 'duration': 7.941}, {'end': 822.007, 'text': 'And we could say, dances Alice like this.', 'start': 818.726, 'duration': 3.281}, {'end': 825.368, 'text': 'And then we could also come in and issue a write command.', 'start': 822.027, 'duration': 3.341}, {'end': 832.129, 'text': 'So we could say, when Alice is happy and with Albert, she dances.', 'start': 825.448, 'duration': 6.681}], 'summary': 'Introducing a method to define predicates for commands, enhancing efficiency.', 'duration': 29.645, 'max_score': 802.484, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs802484.jpg'}], 'start': 462.923, 'title': 'Prolog fundamentals and database concepts', 'summary': 'Introduces fundamental prolog concepts like facts, rules, and variables, emphasizing language simplicity and utility for expressing relationships. it also explains database concepts such as facts, rules, predicates, and syntax for defining relationships, organizing predicates, and using rules with multiple conditions and variables.', 'chapters': [{'end': 599.999, 'start': 462.923, 'title': 'Introduction to prolog and its basic concepts', 'summary': 'Introduces the fundamental concepts of prolog, including facts, rules, clauses, and variables, and emphasizes the simplicity and utility of the language for answering questions and expressing relationships.', 'duration': 137.076, 'highlights': ["Prolog introduces the concept of facts, where 'loves' is a predicate and 'Romeo' and 'Juliet' are constants, to express relationships. Introducing the concept of facts, predicate, and constants in Prolog.", "The chapter explains the notion of rules in Prolog, using an example to illustrate the conditional relationship between 'Romeo' and 'Juliet'. Illustrating the use of rules in Prolog with a conditional relationship example.", 'The concept of clauses in Prolog, encompassing both facts and rules, is discussed, highlighting their role as the foundation of Prolog programs. Highlighting the role of clauses as the foundation of Prolog programs.', 'The use and significance of variables in Prolog are explained, emphasizing their role in answering questions and their naming convention. Explaining the significance of variables and their role in answering questions.']}, {'end': 921.053, 'start': 600.419, 'title': 'Facts, rules, and predicates in database', 'summary': 'Explains the concept of facts, rules, and predicates in a database, including the syntax for defining relationships, organizing predicates, and using rules with multiple conditions and variables.', 'duration': 320.634, 'highlights': ["Facts are defined with a relationship, objects in parentheses, and a dot, such as 'Romeo loves Juliet', and can contain letters, numbers, and symbols like plus, minus, and underscore. Example of defining a fact: 'Romeo loves Juliet'.", "Rules are used to define dependencies of facts based on conditions, like 'Albert runs if Albert is happy', and can have multiple conditions connected by commas and 'and' Example of a rule: 'Albert runs if Albert is happy'.", "Predicates are defined to keep commands brief, such as 'does Alice dance?' and can be used to issue write commands and check if a specific condition is true. Example of a predicate: 'does Alice dance?'"]}], 'duration': 458.13, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs462923.jpg', 'highlights': ['Introducing the concept of facts, predicate, and constants in Prolog.', 'Highlighting the role of clauses as the foundation of Prolog programs.', 'Illustrating the use of rules in Prolog with a conditional relationship example.', 'Explaining the significance of variables and their role in answering questions.', "Example of defining a fact: 'Romeo loves Juliet'.", "Example of a rule: 'Albert runs if Albert is happy'.", "Example of a predicate: 'does Alice dance?'"]}, {'end': 1237.699, 'segs': [{'end': 952.896, 'src': 'embed', 'start': 921.193, 'weight': 0, 'content': [{'end': 927.499, 'text': "So it's possible to define different predicates or different rules that all depend upon different conditions, all with the same name.", 'start': 921.193, 'duration': 6.306}, {'end': 934.986, 'text': "Now we'll come back to rules, but let's focus more on variables here for a second so that you completely understand exactly how they work.", 'start': 927.762, 'duration': 7.224}, {'end': 936.607, 'text': "So let's get rid of all that stuff.", 'start': 935.006, 'duration': 1.601}, {'end': 943.451, 'text': "Now a variable is going to be an object, like I said before, in which you're unable to be able to name it whenever you're writing your program.", 'start': 936.707, 'duration': 6.744}, {'end': 945.272, 'text': 'Now, what sets variables apart?', 'start': 943.591, 'duration': 1.681}, {'end': 949.194, 'text': 'is they all begin with an uppercase letter or an underscore, and of course,', 'start': 945.272, 'duration': 3.922}, {'end': 952.896, 'text': "they're going to be able to contain all the same symbols that I talked about previously with atoms.", 'start': 949.194, 'duration': 3.702}], 'summary': 'Defining rules and variables with specific conditions and naming conventions, including uppercase letters and underscores.', 'duration': 31.703, 'max_score': 921.193, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs921193.jpg'}, {'end': 999.685, 'src': 'embed', 'start': 972.03, 'weight': 2, 'content': [{'end': 974.772, 'text': 'So there we are defining Albert is the parent of Bob.', 'start': 972.03, 'duration': 2.742}, {'end': 977.374, 'text': 'Albert is the parent of Betsy and so forth and so on.', 'start': 974.892, 'duration': 2.482}, {'end': 979.115, 'text': "So we'll be working with that information.", 'start': 977.434, 'duration': 1.681}, {'end': 981.376, 'text': "So let's load our new database inside of here.", 'start': 979.195, 'duration': 2.181}, {'end': 983.618, 'text': "And let's go and query this guy.", 'start': 981.717, 'duration': 1.901}, {'end': 988.121, 'text': "So let's say that we wanted to find out everyone who is the parent of Bob.", 'start': 983.678, 'duration': 4.443}, {'end': 989.322, 'text': 'We would just do it this way.', 'start': 988.241, 'duration': 1.081}, {'end': 991.163, 'text': 'And there you can see that Albert came back.', 'start': 989.542, 'duration': 1.621}, {'end': 992.92, 'text': 'as well as Alice comes back.', 'start': 991.579, 'duration': 1.341}, {'end': 999.685, 'text': "And then the no right here means that there is no more additional x's or values that could be assigned to x.", 'start': 993.1, 'duration': 6.585}], 'summary': 'Database query shows albert and alice as parents of bob.', 'duration': 27.655, 'max_score': 972.03, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs972030.jpg'}, {'end': 1144.095, 'src': 'embed', 'start': 1115.257, 'weight': 3, 'content': [{'end': 1117.898, 'text': "So that's a way to find out if he has any grandchildren.", 'start': 1115.257, 'duration': 2.641}, {'end': 1124.162, 'text': "Now we're also going to be able to come over here and create a custom predicate to basically get multiple results.", 'start': 1118.059, 'duration': 6.103}, {'end': 1129.806, 'text': "So let's call this get grandchild if, and here we'll say parent, albert,", 'start': 1124.483, 'duration': 5.323}, {'end': 1133.628, 'text': "and we're also going to say that you're going to be able to pass these values inside here,", 'start': 1130.086, 'duration': 3.542}, {'end': 1144.095, 'text': "so we'll be able to do even more customized things and parent and x and y, and now we'll be able to come in here and write out albert's grandchild is,", 'start': 1133.628, 'duration': 10.467}], 'summary': "Creating a custom predicate to find albert's grandchild.", 'duration': 28.838, 'max_score': 1115.257, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs1115257.jpg'}], 'start': 921.193, 'title': 'Defining predicates, rules, and database query logic', 'summary': "Introduces defining predicates and rules for conditions, and discusses variables' characteristics. it also covers database query and logic using examples involving parents, children, and grandchildren, resulting in specific individual relationships.", 'chapters': [{'end': 952.896, 'start': 921.193, 'title': 'Variables and predicates', 'summary': 'Introduces the concept of defining predicates and rules based on different conditions and discusses the characteristics of variables, such as their naming conventions and the symbols they can contain.', 'duration': 31.703, 'highlights': ["Variables are objects in which you're unable to be able to name it when writing your program, and they all begin with an uppercase letter or an underscore.", 'Predicates and rules can be defined based on different conditions with the same name.']}, {'end': 1237.699, 'start': 953.575, 'title': 'Database query and logic', 'summary': 'Covers the usage of a database to query and apply logic through examples involving parents, children, and grandchildren, with results such as finding parents, children, and grandchildren of specific individuals.', 'duration': 284.124, 'highlights': ['The chapter covers the usage of a database to query and apply logic through examples involving parents, children, and grandchildren. The chapter discusses how to use a database to query and apply logical operations with examples involving parents, children, and grandchildren.', 'Results include finding parents, children, and grandchildren of specific individuals. The examples demonstrate finding specific relationships such as parents, children, and grandchildren in the database.', 'Examples involve finding parents of individuals, querying relationships, and creating custom predicates. The examples include querying relationships, creating custom predicates, and finding parents of specific individuals in the database.']}], 'duration': 316.506, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs921193.jpg', 'highlights': ["Variables are objects in which you're unable to name when writing your program, and they all begin with an uppercase letter or an underscore.", 'Predicates and rules can be defined based on different conditions with the same name.', 'The chapter covers the usage of a database to query and apply logic through examples involving parents, children, and grandchildren.', 'Results include finding parents, children, and grandchildren of specific individuals.', 'Examples involve finding parents of individuals, querying relationships, and creating custom predicates.']}, {'end': 1740.759, 'segs': [{'end': 1406.033, 'src': 'embed', 'start': 1317.977, 'weight': 0, 'content': [{'end': 1321.02, 'text': "Y is still going to be a variable inside of here that we don't know anything about.", 'start': 1317.977, 'duration': 3.043}, {'end': 1326.984, 'text': "And then A is going to represent a value that's going to be passed out after this predicate is done executing.", 'start': 1321.18, 'duration': 5.804}, {'end': 1331.007, 'text': "And if we do that, you're going to see that the grandparents of Carl come back.", 'start': 1327.104, 'duration': 3.903}, {'end': 1333.088, 'text': 'both as Albert as well as Alice.', 'start': 1331.267, 'duration': 1.821}, {'end': 1337.731, 'text': "So that's another way to work with our predicates and pass parameters into them.", 'start': 1333.368, 'duration': 4.363}, {'end': 1339.592, 'text': 'Also very important to know.', 'start': 1337.951, 'duration': 1.641}, {'end': 1350.459, 'text': "let's say we have blushes x if human x, that if this value on the right is true, then this value on the left is going to be deemed true as well.", 'start': 1339.592, 'duration': 10.867}, {'end': 1358.885, 'text': "So if we come in here and define human as Derek, then we'll be able to come in here also and go blushes and pass Derek inside of it,", 'start': 1350.74, 'duration': 8.145}, {'end': 1360.506, 'text': "and that's also going to come back as true.", 'start': 1358.885, 'duration': 1.621}, {'end': 1364.188, 'text': 'So you can see how these rules and these different facts all play off of another.', 'start': 1360.786, 'duration': 3.402}, {'end': 1367.23, 'text': "And to finish this off, let's do another example.", 'start': 1364.588, 'duration': 2.642}, {'end': 1374.574, 'text': "Let's say that we want to say that Tybalt, which is from Romeo and Juliet again, is going to stab Mercutio with a sword.", 'start': 1367.29, 'duration': 7.284}, {'end': 1382.478, 'text': 'And henceforth, Romeo is going to hate X if X stabs Mercutio with a sword.', 'start': 1374.834, 'duration': 7.644}, {'end': 1385.36, 'text': "And of course, we're going to be able to do that and check that out.", 'start': 1382.678, 'duration': 2.682}, {'end': 1388.862, 'text': "And another thing we're going to be able to do over here in the terminal in a second.", 'start': 1385.5, 'duration': 3.362}, {'end': 1391.286, 'text': 'Is there something else called an anonymous variable?', 'start': 1389.102, 'duration': 2.184}, {'end': 1398.098, 'text': "Let's say, for example, that we wanted to check for the existence of the predicate male right here,", 'start': 1391.486, 'duration': 6.612}, {'end': 1401.985, 'text': 'but we did not care about any of the values that are in the predicate male.', 'start': 1398.098, 'duration': 3.887}, {'end': 1406.033, 'text': 'We could also do those with what are called anonymous variables.', 'start': 1402.372, 'duration': 3.661}], 'summary': 'Working with predicates, passing parameters & rules in prolog.', 'duration': 88.056, 'max_score': 1317.977, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs1317977.jpg'}, {'end': 1463.333, 'src': 'embed', 'start': 1425.86, 'weight': 3, 'content': [{'end': 1428.58, 'text': "However, it's going to pop through there for all the different results.", 'start': 1425.86, 'duration': 2.72}, {'end': 1430.321, 'text': 'But we can just hit enter to close that out.', 'start': 1428.64, 'duration': 1.681}, {'end': 1434.006, 'text': 'and see that yes, in fact, there is a predicate called male.', 'start': 1430.621, 'duration': 3.385}, {'end': 1437.89, 'text': 'So one thing you may be asking yourself is where is if??', 'start': 1434.326, 'duration': 3.564}, {'end': 1439.372, 'text': 'Where are conditional statements?', 'start': 1438.131, 'duration': 1.241}, {'end': 1444.699, 'text': 'Well, there really are no if statements inside of prologue, except for that guy right there.', 'start': 1439.492, 'duration': 5.207}, {'end': 1449.405, 'text': 'However, you can pretty much knock them off with a sort of case statement sort of way.', 'start': 1444.879, 'duration': 4.526}, {'end': 1456.849, 'text': "Now remember, we're going to be able to define the same predicate name multiple times and then accept different results and then act on them.", 'start': 1449.645, 'duration': 7.204}, {'end': 1460.732, 'text': 'Well, one thing we could do is we could define a predicate called whatGrade.', 'start': 1457.029, 'duration': 3.703}, {'end': 1463.333, 'text': "And in this situation, we'll say 5.", 'start': 1460.972, 'duration': 2.361}], 'summary': 'Prolog allows defining multiple predicates with different results and acting on them.', 'duration': 37.473, 'max_score': 1425.86, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs1425860.jpg'}, {'end': 1629.475, 'src': 'embed', 'start': 1600.933, 'weight': 2, 'content': [{'end': 1605.599, 'text': 'So, for example, if we had female, Alice, female is going to be the functeur.', 'start': 1600.933, 'duration': 4.666}, {'end': 1613.544, 'text': "And also it's important to know that the number of different arguments inside of here is referred to as the arity inside of prologue.", 'start': 1605.979, 'duration': 7.565}, {'end': 1620.509, 'text': 'So in this situation, female has one arity or one parameter, and that parameter is Alice.', 'start': 1613.664, 'duration': 6.845}, {'end': 1623.551, 'text': "So let's get back to our little Albert explanation here.", 'start': 1620.789, 'duration': 2.762}, {'end': 1629.475, 'text': 'We could also say something like owns and Albert, and then pass in inside of here pet.', 'start': 1623.671, 'duration': 5.804}], 'summary': "In prolog, 'female' has one arity, represented by 'alice' as its parameter.", 'duration': 28.542, 'max_score': 1600.933, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs1600933.jpg'}], 'start': 1237.699, 'title': 'Prolog predicate and structures', 'summary': 'Covers working with predicates, defining rules, passing parameters, using logical rules to determine relationships, anonymous variables, conditional statements, and structures in prolog.', 'chapters': [{'end': 1385.36, 'start': 1237.699, 'title': 'Working with predicates and parameters', 'summary': 'Demonstrates working with predicates, defining rules, and passing parameters into them, showcasing examples of deriving facts and using logical rules to determine relationships between entities and values.', 'duration': 147.661, 'highlights': ['Predicates and parameters are demonstrated through examples of defining relationships between entities and values, such as determining grandparents, brothers, and uncles, with quantifiable examples of query results and logical rules.', "Examples of defining logical rules, such as 'blushes x if human x', showcase the interplay of different facts and rules, with a quantifiable demonstration of passing parameters and evaluating the truth value of a statement.", "The chapter concludes with an example of using logical rules to determine relationships between characters in a literary context, specifically showcasing the application of a logical rule to determine a character's emotion based on a specific action."]}, {'end': 1546.349, 'start': 1385.5, 'title': 'Prolog predicate and conditional statements', 'summary': 'Explains the use of anonymous variables to check the existence of a predicate without receiving additional results, as well as how to define predicates and perform different reactions based on input values using a sort of case statement approach in prolog.', 'duration': 160.849, 'highlights': ["The use of anonymous variables allows for checking the existence of a predicate without receiving additional results. Demonstrates using an anonymous variable to check the existence of the 'male' predicate without retrieving any additional results.", "Defining predicates and performing different reactions based on input values using a sort of case statement approach. Illustrates defining the 'whatGrade' predicate multiple times to handle different input values and perform corresponding reactions, such as directing to kindergarten or first grade based on the input value."]}, {'end': 1740.759, 'start': 1546.349, 'title': 'Prologue structures and predicates', 'summary': 'Discusses the use of structures in prologue to provide context about objects, allowing for clarity and avoidance of confusion, with examples of defining facts and creating predicates, including the use of anonymous variables and formatting for output.', 'duration': 194.41, 'highlights': ['Structures in Prologue allow for adding context about objects to avoid confusion, such as differentiating between owning a pet named Olive or having an actual olive, exemplified through defining facts and creating predicates.', "Examples of defining facts and creating predicates, including the use of anonymous variables and formatting for output, are provided, showcasing practical applications of Prologue's functionalities.", "The concept of structures is explained, highlighting the use of functors and arguments, with clarity on the term 'arity' and its relevance within Prologue, providing a foundational understanding of the language's syntax and structure."]}], 'duration': 503.06, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs1237699.jpg', 'highlights': ["Examples of defining logical rules, such as 'blushes x if human x', showcase the interplay of different facts and rules, with a quantifiable demonstration of passing parameters and evaluating the truth value of a statement.", 'Predicates and parameters are demonstrated through examples of defining relationships between entities and values, such as determining grandparents, brothers, and uncles, with quantifiable examples of query results and logical rules.', "The concept of structures is explained, highlighting the use of functors and arguments, with clarity on the term 'arity' and its relevance within Prologue, providing a foundational understanding of the language's syntax and structure.", "Defining predicates and performing different reactions based on input values using a sort of case statement approach. Illustrates defining the 'whatGrade' predicate multiple times to handle different input values and perform corresponding reactions, such as directing to kindergarten or first grade based on the input value.", "Examples of defining facts and creating predicates, including the use of anonymous variables and formatting for output, are provided, showcasing practical applications of Prologue's functionalities.", "The use of anonymous variables allows for checking the existence of a predicate without receiving additional results. Demonstrates using an anonymous variable to check the existence of the 'male' predicate without retrieving any additional results.", "The chapter concludes with an example of using logical rules to determine relationships between characters in a literary context, specifically showcasing the application of a logical rule to determine a character's emotion based on a specific action."]}, {'end': 2012.235, 'segs': [{'end': 1783.994, 'src': 'embed', 'start': 1740.919, 'weight': 0, 'content': [{'end': 1749.502, 'text': 'We then be able to go get customer balance and then pass in Sally Smith and see that Sally Smith owes us $120.55.', 'start': 1740.919, 'duration': 8.583}, {'end': 1752.385, 'text': 'We could also come in and do some really neat things.', 'start': 1749.502, 'duration': 2.883}, {'end': 1761.614, 'text': "So let's say we wanted to define something like a complex term that shows exactly what it means to be vertical versus being a horizontal line.", 'start': 1752.505, 'duration': 9.109}, {'end': 1762.615, 'text': 'Well, we could do that.', 'start': 1761.734, 'duration': 0.881}, {'end': 1769.922, 'text': "We could say vertical and we could define a line that's going to have a point that's going to be x and y,", 'start': 1762.715, 'duration': 7.207}, {'end': 1776.088, 'text': 'as well as a point that is going to be the same value of x and a different value of y.', 'start': 1769.922, 'duration': 6.166}, {'end': 1776.708, 'text': 'And there you go.', 'start': 1776.088, 'duration': 0.62}, {'end': 1783.994, 'text': 'We just defined what it means to be vertical, and we could also come in and define what it means to be horizontal in much the same way.', 'start': 1776.808, 'duration': 7.186}], 'summary': 'The transcript discusses defining vertical and horizontal lines with an example, along with demonstrating customer balance retrieval, mentioning sally smith owes $120.55.', 'duration': 43.075, 'max_score': 1740.919, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs1740919.jpg'}, {'end': 1883.64, 'src': 'embed', 'start': 1854.052, 'weight': 5, 'content': [{'end': 1857.674, 'text': 'Even better yet, we can come in and type in something like vertical.', 'start': 1854.052, 'duration': 3.622}, {'end': 1861.457, 'text': 'And pass in line and point and 5 and 10.', 'start': 1857.935, 'duration': 3.522}, {'end': 1866.339, 'text': "And then ask it for the x and y's that would be required to make this vertical.", 'start': 1861.457, 'duration': 4.882}, {'end': 1867.12, 'text': 'Close that off.', 'start': 1866.46, 'duration': 0.66}, {'end': 1872.853, 'text': "And there you can see that it doesn't matter what the value of y is as long as the value of x is equal to 5.", 'start': 1867.32, 'duration': 5.533}, {'end': 1876.455, 'text': "So that's an introduction to complex terms and structures.", 'start': 1872.853, 'duration': 3.602}, {'end': 1879.557, 'text': "And of course, we're going to be seeing those later as the tutorial continues.", 'start': 1876.815, 'duration': 2.742}, {'end': 1883.64, 'text': "Now let's jump over and take a look at how we can compare values inside a prologue.", 'start': 1879.897, 'duration': 3.743}], 'summary': 'Introduction to complex terms and structures in programming tutorial.', 'duration': 29.588, 'max_score': 1854.052, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs1854052.jpg'}, {'end': 1931.103, 'src': 'embed', 'start': 1907.436, 'weight': 1, 'content': [{'end': 1914.52, 'text': "And you're going to see that that comes back that indeed Alice is not equal to Albert, and that's exactly how we would figure that out.", 'start': 1907.436, 'duration': 7.084}, {'end': 1920.161, 'text': 'We could also come in and just do arbitrary things like is 3 greater than 15? No.', 'start': 1914.72, 'duration': 5.441}, {'end': 1924.381, 'text': "We'd be able to check if 3 is greater than or equal to 15.", 'start': 1920.401, 'duration': 3.98}, {'end': 1925.162, 'text': 'Also no.', 'start': 1924.381, 'duration': 0.781}, {'end': 1931.103, 'text': 'Or we could come and check if 3 is, and this is how you do less than or equal to, like this.', 'start': 1925.482, 'duration': 5.621}], 'summary': 'Demonstrating comparison operations and results with examples.', 'duration': 23.667, 'max_score': 1907.436, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs1907436.jpg'}, {'end': 1992.828, 'src': 'embed', 'start': 1967.634, 'weight': 4, 'content': [{'end': 1973.022, 'text': 'This basically just says that any variable can be assigned anything and one of those things is another variable.', 'start': 1967.634, 'duration': 5.388}, {'end': 1985.959, 'text': "And another thing that's true is, let's say we go rich is equal to money, x equal to rich, y no debt, completely arbitrary types of things.", 'start': 1973.202, 'duration': 12.757}, {'end': 1992.828, 'text': "and you're going to see that this also comes back and true, and the reason why that comes back is true, is this is going to be equal to this.", 'start': 1985.959, 'duration': 6.869}], 'summary': "Variables can be assigned any value, including another variable. it's true that x=rich, y=nodebt, and x=y is true.", 'duration': 25.194, 'max_score': 1967.634, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs1967634.jpg'}], 'start': 1740.919, 'title': 'Complex terms and comparing values in prologue', 'summary': 'Introduces complex terms including vertical and horizontal lines and explains comparing values in prologue such as equality, inequality, and variable assignment with relevant examples.', 'chapters': [{'end': 1876.455, 'start': 1740.919, 'title': 'Introduction to complex terms', 'summary': 'Introduces complex terms and structures, explaining the definition of vertical and horizontal lines with examples, demonstrating how to determine if a line is vertical or horizontal, and showing how to calculate the x and y values required to make a line vertical.', 'duration': 135.536, 'highlights': ['The chapter introduces complex terms and structures, explaining the definition of vertical and horizontal lines with examples, demonstrating how to determine if a line is vertical or horizontal, and showing how to calculate the x and y values required to make a line vertical.', 'The transcript provides examples and explanations of defining vertical and horizontal lines with specific points and values, such as x, y, and different combinations, illustrating the concepts of vertical and horizontal lines effectively.', 'Demonstrates the process of determining if a line is vertical or horizontal, using specific values and executing the operations to confirm the nature of the line, with an example showing the determination of a line as vertical or horizontal based on input values.', 'Illustrates the calculation of the x and y values required to make a line vertical, showing how to input specific values and obtain the corresponding x and y values for a vertical line, providing a clear demonstration of the process.']}, {'end': 2012.235, 'start': 1876.815, 'title': 'Comparing values in prologue', 'summary': "Explains how to compare values in prologue, demonstrating equality, inequality, and variable assignment, with examples such as 'alice equal to alice', '3 greater than 15', and 'rand1 equal to rand2'.", 'duration': 135.42, 'highlights': ["The chapter explains how to compare values in Prologue, demonstrating equality, inequality, and variable assignment, with examples such as 'Alice equal to Alice', '3 greater than 15', and 'rand1 equal to rand2'.", "The tutorial showcases various comparisons such as 'is Alice equal to Alice', 'is this equal to Alice', 'is 3 greater than 15', 'is 3 greater than or equal to 15', and 'is 3 less than or equal to 15'.", "It also illustrates variable assignment and evaluations, like assigning 'w' the value of 'Alice' and checking if 'rich' is equal to 'money', 'x' equal to 'rich', and 'y' no debt, all of which come back true."]}], 'duration': 271.316, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs1740919.jpg', 'highlights': ['The chapter introduces complex terms and structures, explaining the definition of vertical and horizontal lines with examples.', "The tutorial showcases various comparisons such as 'is Alice equal to Alice', 'is this equal to Alice', 'is 3 greater than 15', 'is 3 greater than or equal to 15', and 'is 3 less than or equal to 15'.", 'Demonstrates the process of determining if a line is vertical or horizontal, using specific values and executing the operations to confirm the nature of the line, with an example showing the determination of a line as vertical or horizontal based on input values.', 'The transcript provides examples and explanations of defining vertical and horizontal lines with specific points and values, such as x, y, and different combinations, illustrating the concepts of vertical and horizontal lines effectively.', "It also illustrates variable assignment and evaluations, like assigning 'w' the value of 'Alice' and checking if 'rich' is equal to 'money', 'x' equal to 'rich', and 'y' no debt, all of which come back true.", 'Illustrates the calculation of the x and y values required to make a line vertical, showing how to input specific values and obtain the corresponding x and y values for a vertical line, providing a clear demonstration of the process.']}, {'end': 2453.799, 'segs': [{'end': 2069.69, 'src': 'embed', 'start': 2012.235, 'weight': 0, 'content': [{'end': 2015.559, 'text': 'to then be able to handle a lot of errors and get yourself out of errors.', 'start': 2012.235, 'duration': 3.324}, {'end': 2020.131, 'text': "Also, another thing that's very interesting or that is good to know about is trace,", 'start': 2015.908, 'duration': 4.223}, {'end': 2025.255, 'text': "because it's going to really help you better understand how Prolog works, how it processes data,", 'start': 2020.131, 'duration': 5.124}, {'end': 2028.918, 'text': 'achieves goals and comes back with either whether things are true or false.', 'start': 2025.255, 'duration': 3.663}, {'end': 2033.081, 'text': 'So what I did was I went over here and created a couple different rules for ourselves.', 'start': 2029.198, 'duration': 3.883}, {'end': 2039.006, 'text': 'So we have penguins and humans and whether or not they are warm-blooded, produce milk, or have feathers.', 'start': 2033.382, 'duration': 5.624}, {'end': 2043.381, 'text': 'And then I defined a rule down here on whether something can be a mammal or not.', 'start': 2039.36, 'duration': 4.021}, {'end': 2045.201, 'text': 'It must be all those three things.', 'start': 2043.401, 'duration': 1.8}, {'end': 2048.722, 'text': "And you're going to see exactly how this works because we're going to use trace.", 'start': 2045.681, 'duration': 3.041}, {'end': 2050.621, 'text': 'Go get our database all loaded.', 'start': 2049.081, 'duration': 1.54}, {'end': 2053.083, 'text': "And now what I'm going to do is I'm going to turn on trace.", 'start': 2050.842, 'duration': 2.241}, {'end': 2055.563, 'text': 'This is often used for debugging inside of Prolog.', 'start': 2053.103, 'duration': 2.46}, {'end': 2058.024, 'text': 'And you can see there the debugger is all set up.', 'start': 2055.924, 'duration': 2.1}, {'end': 2066.706, 'text': "And now what I can do is I can go mammal like this and pass in human like that and see exactly how it's going to be processed.", 'start': 2058.264, 'duration': 8.442}, {'end': 2069.69, 'text': 'So you can see right here the very first thing Prologue does.', 'start': 2067.045, 'duration': 2.645}], 'summary': 'Using trace in prolog for debugging and understanding processing of data and achieving goals.', 'duration': 57.455, 'max_score': 2012.235, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs2012235.jpg'}, {'end': 2349.626, 'src': 'embed', 'start': 2329.57, 'weight': 5, 'content': [{'end': 2342.004, 'text': "And another thing that's interesting is we would also be able to come in here and go related like this and then pass in Z and Carl and be able to cycle through all of the possible different results.", 'start': 2329.57, 'duration': 12.434}, {'end': 2344.684, 'text': 'Everybody that Carl is ultimately related to.', 'start': 2342.424, 'duration': 2.26}, {'end': 2349.626, 'text': "So kind of cool ways of using recursion and of course we're going to look more at those later on.", 'start': 2345.044, 'duration': 4.582}], 'summary': 'Exploring recursion to find all possible relationships with z and carl.', 'duration': 20.056, 'max_score': 2329.57, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs2329570.jpg'}, {'end': 2442.151, 'src': 'embed', 'start': 2417.769, 'weight': 4, 'content': [{'end': 2428.14, 'text': 'and then likewise we could do inequality between expressions by going equal sign and then the backslash and equal sign, four plus five like that,', 'start': 2417.769, 'duration': 10.371}, {'end': 2434.405, 'text': "and that's going to come back as no, of course, and we'd also be able to check for multiple different comparisons with an or operator.", 'start': 2428.14, 'duration': 6.265}, {'end': 2442.151, 'text': 'the or operator in this situation is going to be the semicolon and you can also use those or operations in your rules and so forth,', 'start': 2434.405, 'duration': 7.746}], 'summary': 'Expressions can be compared using equal and not equal signs, and multiple comparisons can be made using the or operator.', 'duration': 24.382, 'max_score': 2417.769, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs2417769.jpg'}], 'start': 2012.235, 'title': "Prolog's trace and rules", 'summary': "Discusses the use of trace in prolog for understanding processing and the application of rules, recursion, and math, with examples including categorizing mammals and evaluating mathematical expressions using the 'is' keyword.", 'chapters': [{'end': 2069.69, 'start': 2012.235, 'title': 'Prolog trace for understanding processing', 'summary': 'Discusses the use of trace in prolog, highlighting how it aids in better understanding how prolog processes data, achieves goals, and evaluates true or false outcomes, demonstrated through creating rules for categorizing mammals based on warm-bloodedness, milk production, and feathers, and utilizing trace to observe the processing of a query.', 'duration': 57.455, 'highlights': ['The use of trace in Prolog aids in understanding how it processes data, achieves goals, and evaluates true or false outcomes, providing valuable insight into the functioning of Prolog and its decision-making process.', 'Demonstrating the creation of rules for categorizing mammals based on warm-bloodedness, milk production, and feathers, and the use of trace to observe the processing of a query, offering practical application and visualization of trace utility.', 'The process of turning on trace for debugging purposes inside Prolog, showcasing the practical use of trace for debugging and problem-solving within the Prolog environment.']}, {'end': 2453.799, 'start': 2069.69, 'title': 'Prolog: rules, recursion, and math', 'summary': "Demonstrates the application of rules in prolog to determine if an entity is a mammal, the use of recursion to establish relationships between individuals, and the evaluation of mathematical expressions using the 'is' keyword.", 'duration': 384.109, 'highlights': ['The chapter demonstrates the application of rules in Prolog to determine if an entity is a mammal. The process involves checking if the entity is warm-blooded, produces milk, and has hair, with each check leading to an exit or failure.', "The use of recursion to establish relationships between individuals is illustrated. Recursion is employed to determine if individuals are related, with examples showing the use of specific relations like 'parent x and y' and the ability to work around false relations using recursion.", "The evaluation of mathematical expressions using the 'is' keyword is showcased. Various mathematical operations such as addition, multiplication, division, and comparison are demonstrated, including the use of the or operator for multiple comparisons."]}], 'duration': 441.564, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs2012235.jpg', 'highlights': ['The use of trace in Prolog aids in understanding how it processes data, achieves goals, and evaluates true or false outcomes, providing valuable insight into the functioning of Prolog and its decision-making process.', 'The process of turning on trace for debugging purposes inside Prolog, showcasing the practical use of trace for debugging and problem-solving within the Prolog environment.', 'Demonstrating the creation of rules for categorizing mammals based on warm-bloodedness, milk production, and feathers, and the use of trace to observe the processing of a query, offering practical application and visualization of trace utility.', 'The chapter demonstrates the application of rules in Prolog to determine if an entity is a mammal. The process involves checking if the entity is warm-blooded, produces milk, and has hair, with each check leading to an exit or failure.', "The evaluation of mathematical expressions using the 'is' keyword is showcased. Various mathematical operations such as addition, multiplication, division, and comparison are demonstrated, including the use of the or operator for multiple comparisons.", "The use of recursion to establish relationships between individuals is illustrated. Recursion is employed to determine if individuals are related, with examples showing the use of specific relations like 'parent x and y' and the ability to work around false relations using recursion."]}, {'end': 3391.669, 'segs': [{'end': 2478.541, 'src': 'embed', 'start': 2454.019, 'weight': 0, 'content': [{'end': 2462.706, 'text': "We're also going to be able to come in and say x is and get the modulus or the remainder of a division of 7 divided by 2.", 'start': 2454.019, 'duration': 8.687}, {'end': 2467.37, 'text': "There you can get 1 and let's come in and create ourselves a predicate as well.", 'start': 2462.706, 'duration': 4.664}, {'end': 2474.115, 'text': "Let's say we want to do something like double digits and it's going to get a value of x and y like that.", 'start': 2467.59, 'duration': 6.525}, {'end': 2478.541, 'text': 'We could say if, and then we could perform some calculations inside of here.', 'start': 2474.455, 'duration': 4.086}], 'summary': 'Demonstrating modulus calculation and predicate creation in code.', 'duration': 24.522, 'max_score': 2454.019, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs2454019.jpg'}, {'end': 2522.266, 'src': 'embed', 'start': 2498.284, 'weight': 1, 'content': [{'end': 2505.342, 'text': "So let's say we want to generate a random value between zero and 10, and store it in the variable of x.", 'start': 2498.284, 'duration': 7.058}, {'end': 2506.202, 'text': 'Well, there you go.', 'start': 2505.342, 'duration': 0.86}, {'end': 2508.663, 'text': 'And you can see there that this is indeed random.', 'start': 2506.522, 'duration': 2.141}, {'end': 2514.324, 'text': 'Could also, you can see more about this as well later on, get all the values between 0 and 10.', 'start': 2508.823, 'duration': 5.501}, {'end': 2518.485, 'text': "We can just go 0, 10, and let's have them stored in x.", 'start': 2514.324, 'duration': 4.161}, {'end': 2519.425, 'text': 'And you can see all those.', 'start': 2518.485, 'duration': 0.94}, {'end': 2522.266, 'text': 'And we could cycle through them one by one by typing in a semicolon.', 'start': 2519.465, 'duration': 2.801}], 'summary': 'Generating random values between 0 and 10, stored in variable x.', 'duration': 23.982, 'max_score': 2498.284, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs2498284.jpg'}, {'end': 2566.268, 'src': 'embed', 'start': 2539.977, 'weight': 2, 'content': [{'end': 2548.901, 'text': 'we can get an absolute value, absolute, and just pass in negative eight, and there that is, we can get the largest of uh two values.', 'start': 2539.977, 'duration': 8.924}, {'end': 2555.493, 'text': 'so we could say x is and then just pass in max and say something like 10 and 5..', 'start': 2548.901, 'duration': 6.592}, {'end': 2556.236, 'text': 'There that is.', 'start': 2555.493, 'duration': 0.743}, {'end': 2560.645, 'text': 'We could also, in a very similar way, get the minimum value, and there that is.', 'start': 2556.296, 'duration': 4.349}, {'end': 2566.268, 'text': 'We can round values or convert floating point values into integers.', 'start': 2560.965, 'duration': 5.303}], 'summary': 'Demonstrates use of absolute value, maximum, minimum, rounding, and converting floating point values into integers.', 'duration': 26.291, 'max_score': 2539.977, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs2539977.jpg'}, {'end': 2818.234, 'src': 'embed', 'start': 2791.586, 'weight': 3, 'content': [{'end': 2797.289, 'text': "you have to type in write and then this is going to be the stream that we're going to be referring to over and over again.", 'start': 2791.586, 'duration': 5.703}, {'end': 2801.952, 'text': 'and then we could say to write to the stream, we just go right stream text,', 'start': 2797.289, 'duration': 4.663}, {'end': 2808.281, 'text': "the text you want to write to it and Let's throw in a new line and then to close the stream or the connection to the file.", 'start': 2801.952, 'duration': 6.329}, {'end': 2808.681, 'text': "That's all.", 'start': 2808.281, 'duration': 0.4}, {'end': 2809.242, 'text': 'stream is.', 'start': 2808.681, 'duration': 0.561}, {'end': 2810.604, 'text': 'you would just do that.', 'start': 2809.242, 'duration': 1.362}, {'end': 2818.234, 'text': 'now we want to check that we were actually able to write to the file, and The way to do that is to read, to read from the file.', 'start': 2810.604, 'duration': 7.63}], 'summary': 'Instructions on writing and closing a stream for file, then checking for successful write by reading from the file.', 'duration': 26.648, 'max_score': 2791.586, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs2791586.jpg'}, {'end': 3243.039, 'src': 'embed', 'start': 3214.371, 'weight': 4, 'content': [{'end': 3219.112, 'text': 'Yes, indeed, we can change our database from over here over inside of our database.', 'start': 3214.371, 'duration': 4.741}, {'end': 3223.213, 'text': 'The only thing you need to remember here is anything that you plan on changing.', 'start': 3219.412, 'duration': 3.801}, {'end': 3231.234, 'text': "any predicates you're going to have to mark as dynamic at the very beginning of your file, or at least before they are ever used anywhere in any way.", 'start': 3223.213, 'duration': 8.021}, {'end': 3237.316, 'text': "And what we're doing here is we're saying this is the father predicate that is going to receive two attributes.", 'start': 3231.535, 'duration': 5.781}, {'end': 3238.216, 'text': "That's what that means.", 'start': 3237.596, 'duration': 0.62}, {'end': 3243.039, 'text': 'if there was a predicate here that received three attributes, we would put a three there instead.', 'start': 3238.456, 'duration': 4.583}], 'summary': 'Database can be changed by marking predicates as dynamic, specifying attributes.', 'duration': 28.668, 'max_score': 3214.371, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs3214371.jpg'}], 'start': 2454.019, 'title': 'Prologue programming features, math functions, file operations, and database manipulation', 'summary': 'Introduces modulus operation, predicate creation, random value generation, and value incrementation. it also covers math functions such as absolute value, maximum, minimum, rounding, and truncating values, file operations including writing to and reading from a file, and database manipulation including adding, deleting, and verifying data.', 'chapters': [{'end': 2539.977, 'start': 2454.019, 'title': 'Prologue programming features', 'summary': 'Introduces key features of prologue programming including modulus operation, predicate creation, random value generation, and value incrementation.', 'duration': 85.958, 'highlights': ['The chapter demonstrates the use of modulus operation in prologue programming to obtain the remainder of a division, such as 7 divided by 2 resulting in a remainder of 1.', "It introduces predicate creation in prologue programming, exemplifying the creation of a 'double digits' predicate and performing calculations within it.", 'The transcript illustrates the generation of random values in prologue programming, showcasing the generation of a random value between 0 and 10 and storing it in a variable.', 'It showcases the value incrementation feature in prologue programming, demonstrating the process of adding one and assigning it to a value, a commonly used operation in prologue.']}, {'end': 2884.353, 'start': 2539.977, 'title': 'Math functions and file operations', 'summary': 'Covers various math functions such as absolute value, maximum, minimum, rounding, and truncating values, as well as file operations including writing to and reading from a file, and using predicates to process the file stream.', 'duration': 344.376, 'highlights': ['Various math functions are covered, including maximum, minimum, rounding, and truncating values. The chapter introduces functions such as max, min, round, and truncate for performing mathematical operations on values.', 'Demonstration of creating a predicate to determine if a number is even, using division and equality comparison. An example of creating a predicate to check if a number is even using division and equality comparison is provided.', 'Explanation of file operations, including writing text to a file and reading from a file stream. The process of writing text to a file and reading from a file stream is explained, along with the necessary steps involved.']}, {'end': 3391.669, 'start': 2884.713, 'title': 'File processing, looping, and database manipulation', 'summary': 'Discusses file processing including accepting input, output to console and files, looping using recursion and different types of loops, and database manipulation including adding, deleting, and verifying data.', 'duration': 506.956, 'highlights': ['The chapter explains how to accept input from the user, output to the console and files, and work with looping including recursion and different types of loops.', 'It details the process of database manipulation, including adding, deleting, and verifying data using assert and retract predicates.', 'The transcript mainly discusses file processing, including accepting input, output to console and files, and looping through recursion and different types of loops.', 'It also covers database manipulation, including adding, deleting, and verifying data using assert and retract predicates.']}], 'duration': 937.65, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs2454019.jpg', 'highlights': ['Introduces modulus operation in prologue programming, showcasing 7 divided by 2 resulting in a remainder of 1.', 'Demonstrates the generation of random values in prologue programming, showcasing the generation of a random value between 0 and 10.', 'Covers math functions such as maximum, minimum, rounding, and truncating values, introducing functions like max, min, round, and truncate.', 'Explains file operations, including writing text to a file and reading from a file stream.', 'Details the process of database manipulation, including adding, deleting, and verifying data using assert and retract predicates.']}, {'end': 3816.216, 'segs': [{'end': 3441.885, 'src': 'embed', 'start': 3412.877, 'weight': 3, 'content': [{'end': 3418.373, 'text': "Now you're going to be able to store atoms, complex terms, variables, numbers, and other lists in a list.", 'start': 3412.877, 'duration': 5.496}, {'end': 3422.694, 'text': "And they're basically used to store data that has an unknown number of elements.", 'start': 3418.872, 'duration': 3.822}, {'end': 3428.017, 'text': "Now you're going to be able to add values to a list with what's called the list constructor.", 'start': 3422.974, 'duration': 5.043}, {'end': 3431.179, 'text': "And I'm just going to go right and define a list.", 'start': 3428.457, 'duration': 2.722}, {'end': 3432.7, 'text': 'So here we are, Albert.', 'start': 3431.199, 'duration': 1.501}, {'end': 3441.885, 'text': 'If I wanted to add Albert to the beginning of the list that has Alice and Bob inside of it, close off that list right like that.', 'start': 3432.98, 'duration': 8.905}], 'summary': 'Introducing the ability to store various types of data in a list and add values to it.', 'duration': 29.008, 'max_score': 3412.877, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs3412877.jpg'}, {'end': 3514.857, 'src': 'heatmap', 'start': 3472.726, 'weight': 1, 'content': [{'end': 3474.047, 'text': 'and B and C,', 'start': 3472.726, 'duration': 1.321}, {'end': 3480.309, 'text': 'and the head is going to be the first letter inside of the list of the first element inside of our list and the tail is going to be the last ones.', 'start': 3474.047, 'duration': 6.262}, {'end': 3488.051, 'text': "you're also going to be able to come in here and get more values by just adding them to the left side of your constructor there.", 'start': 3480.309, 'duration': 7.742}, {'end': 3491.551, 'text': "so let's say x1, x2, x4 pipe.", 'start': 3488.051, 'duration': 3.5}, {'end': 3498.753, 'text': 'inside of there this is going to be the t or the tail, b, c and d, and you can see got all those different values out of there.', 'start': 3491.551, 'duration': 7.202}, {'end': 3501.814, 'text': "we're also going to be able to use anonymous variables, of course,", 'start': 3498.753, 'duration': 3.061}, {'end': 3506.055, 'text': "like we've used in so many other different situations in which we don't care about the value.", 'start': 3501.814, 'duration': 4.241}, {'end': 3510.176, 'text': 'so we could do x2 and then say we want the tail part is equal to,', 'start': 3506.055, 'duration': 4.121}, {'end': 3514.857, 'text': 'and there you can see it popped back or it grabbed the second element inside the list and ignored everything else.', 'start': 3510.176, 'duration': 4.681}], 'summary': 'Manipulating lists and retrieving specific elements using constructors and anonymous variables.', 'duration': 42.131, 'max_score': 3472.726, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs3472726.jpg'}, {'end': 3578.74, 'src': 'embed', 'start': 3549.873, 'weight': 1, 'content': [{'end': 3552.174, 'text': "Prologue isn't very picky when it comes to white space.", 'start': 3549.873, 'duration': 2.301}, {'end': 3554.916, 'text': 'We could also come in here and define a list.', 'start': 3552.514, 'duration': 2.402}, {'end': 3559.138, 'text': "Let's go that and check if A is inside of our list.", 'start': 3554.956, 'duration': 4.182}, {'end': 3560.979, 'text': 'And you can see that indeed it was.', 'start': 3559.439, 'duration': 1.54}, {'end': 3562.38, 'text': 'And then we use member for that.', 'start': 3561.039, 'duration': 1.341}, {'end': 3568.044, 'text': 'We could also use member to get all of the different items in the list by passing X inside of there.', 'start': 3562.56, 'duration': 5.484}, {'end': 3569.945, 'text': "It's going to cycle through all those for us.", 'start': 3568.284, 'duration': 1.661}, {'end': 3573.495, 'text': "And you could say that it's going to give us all the different values that are available.", 'start': 3570.452, 'duration': 3.043}, {'end': 3574.556, 'text': 'You can do all sorts of things.', 'start': 3573.535, 'duration': 1.021}, {'end': 3576.979, 'text': "There's tons of different functions we can use.", 'start': 3574.576, 'duration': 2.403}, {'end': 3578.74, 'text': 'We could reverse these guys.', 'start': 3577.019, 'duration': 1.721}], 'summary': 'Introduction to prologue language and its list manipulation capabilities.', 'duration': 28.867, 'max_score': 3549.873, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs3549873.jpg'}, {'end': 3620.493, 'src': 'embed', 'start': 3588.57, 'weight': 4, 'content': [{'end': 3590.752, 'text': "Forgot to put the variable it's going to be assigned to.", 'start': 3588.57, 'duration': 2.182}, {'end': 3591.132, 'text': "There's x.", 'start': 3590.792, 'duration': 0.34}, {'end': 3593.774, 'text': 'And there you can see, concatenated those lists together.', 'start': 3591.132, 'duration': 2.642}, {'end': 3596.176, 'text': "Now let's do something a little bit interesting with a list.", 'start': 3593.994, 'duration': 2.182}, {'end': 3602.301, 'text': "I'll show you how to cycle through a list so that we will be able to perform operations on list items.", 'start': 3597.097, 'duration': 5.204}, {'end': 3605.143, 'text': 'So this is going to handle our empty list for us.', 'start': 3602.701, 'duration': 2.442}, {'end': 3607.925, 'text': "And then we'll say something like write list.", 'start': 3605.403, 'duration': 2.522}, {'end': 3612.249, 'text': "And then we're going to get the head as well as the tail.", 'start': 3608.306, 'duration': 3.943}, {'end': 3615.27, 'text': 'that is going to be passed inside of here for our list item.', 'start': 3612.649, 'duration': 2.621}, {'end': 3620.493, 'text': "And then we'll just, in this situation, we'll just keep it simple and we'll write out our list to the screen.", 'start': 3615.591, 'duration': 4.902}], 'summary': 'Demonstrating list operations and iteration in python.', 'duration': 31.923, 'max_score': 3588.57, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs3588570.jpg'}, {'end': 3652.768, 'src': 'embed', 'start': 3627.237, 'weight': 0, 'content': [{'end': 3635.281, 'text': 'And by doing that, we can just go write list and then pass in some values inside here or pass a list in 1, 2, 3, 4, and 5 or whatever you want.', 'start': 3627.237, 'duration': 8.044}, {'end': 3636.121, 'text': 'It could be anything.', 'start': 3635.441, 'duration': 0.68}, {'end': 3638.123, 'text': 'And you could see that it printed out every list item.', 'start': 3636.322, 'duration': 1.801}, {'end': 3640.824, 'text': 'We could also perform operations on all those list items as well.', 'start': 3638.143, 'duration': 2.681}, {'end': 3647.066, 'text': 'So here is a whole bunch of information in regards to lists and how we can operate and work with those.', 'start': 3641.064, 'duration': 6.002}, {'end': 3648.367, 'text': "Now let's take a look at strings.", 'start': 3647.126, 'duration': 1.241}, {'end': 3652.768, 'text': "Now it's very important to understand name and how it's going to operate.", 'start': 3649.347, 'duration': 3.421}], 'summary': 'Demonstrates list operations and working with strings, emphasizing importance of understanding names and operations.', 'duration': 25.531, 'max_score': 3627.237, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs3627237.jpg'}, {'end': 3694.591, 'src': 'embed', 'start': 3663.712, 'weight': 5, 'content': [{'end': 3667.974, 'text': "It's very important to remember how this works because we're going to be using this to do a whole bunch of things.", 'start': 3663.712, 'duration': 4.262}, {'end': 3671.996, 'text': "And there you can see, there's the ASCII values for all of those different characters.", 'start': 3668.214, 'duration': 3.782}, {'end': 3677.76, 'text': "We're then also going to be able to convert the ASCII character list into a string itself.", 'start': 3672.377, 'duration': 5.383}, {'end': 3681.022, 'text': 'Just have to put the x ahead of time, right like that.', 'start': 3678.02, 'duration': 3.002}, {'end': 3684.024, 'text': "And if you do that, you're going to go and grab this guy.", 'start': 3681.422, 'duration': 2.602}, {'end': 3685.385, 'text': 'Paste that inside of there.', 'start': 3684.404, 'duration': 0.981}, {'end': 3688.827, 'text': "And you're going to see a random string pops back out on our screen for us.", 'start': 3685.685, 'duration': 3.142}, {'end': 3694.591, 'text': "When we go in here and create a little function that's going to allow us to append or join our strings together.", 'start': 3689.227, 'duration': 5.364}], 'summary': 'Demonstrating ascii value conversion and string manipulation for various characters.', 'duration': 30.879, 'max_score': 3663.712, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs3663712.jpg'}, {'end': 3745.049, 'src': 'embed', 'start': 3720.017, 'weight': 6, 'content': [{'end': 3726.18, 'text': "So we'll go append string list one and then string list two and then string list.", 'start': 3720.017, 'duration': 6.163}, {'end': 3727.621, 'text': 'And this is going to be three.', 'start': 3726.56, 'duration': 1.061}, {'end': 3732.243, 'text': 'And now we can come in and go name string three and pass in string list three.', 'start': 3727.861, 'duration': 4.382}, {'end': 3736.645, 'text': "It's going to convert it from those ASCII characters back into a final string.", 'start': 3732.543, 'duration': 4.102}, {'end': 3740.447, 'text': "And now we'll be able to come in here and go join string like this.", 'start': 3736.845, 'duration': 3.602}, {'end': 3745.049, 'text': "And then we'll just pass in two strings together, another and random string.", 'start': 3740.807, 'duration': 4.242}], 'summary': 'Appending three string lists and converting ascii characters into a final string.', 'duration': 25.032, 'max_score': 3720.017, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs3720017.jpg'}, {'end': 3801.82, 'src': 'embed', 'start': 3760.994, 'weight': 2, 'content': [{'end': 3761.795, 'text': 'with strings.', 'start': 3760.994, 'duration': 0.801}, {'end': 3775.688, 'text': "I could also come in here and get different characters out of a string by just going name and just throw in a name and store that in list like this and then I could call n and then put an o in there or a zero inside of there and let's say I want the first,", 'start': 3761.795, 'duration': 13.893}, {'end': 3782.294, 'text': "which is going to be the zero index and list for that, and it's going to be stored in f character like that.", 'start': 3775.688, 'duration': 6.606}, {'end': 3789.863, 'text': 'and then if I wanted to output a character, I just go f character And you can see the D came out and it also went and printed out the entire list.', 'start': 3782.294, 'duration': 7.569}, {'end': 3794.013, 'text': "And then finally, let's also go and show you how to get the length.", 'start': 3790.143, 'duration': 3.87}, {'end': 3795.333, 'text': 'of a string.', 'start': 3794.432, 'duration': 0.901}, {'end': 3798.537, 'text': 'Just type in atom length x and there you go.', 'start': 3795.433, 'duration': 3.104}, {'end': 3799.397, 'text': 'So there you go guys.', 'start': 3798.557, 'duration': 0.84}, {'end': 3801.82, 'text': 'There is a heck of a lot of information about Prologue.', 'start': 3799.478, 'duration': 2.342}], 'summary': 'Manipulating strings in prologue to access characters and obtain length.', 'duration': 40.826, 'max_score': 3760.994, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs3760994.jpg'}], 'start': 3392.029, 'title': 'Prolog lists and string operations', 'summary': 'Covers the usage of lists in prolog, including adding values, retrieving length, dividing into head and tail parts, using anonymous variables, accessing values, checking for membership, reversing, concatenating, cycling through, and performing operations on list items. it also explains the process of converting strings into ascii characters and back, appending strings, accessing characters, and determining the length of a string in prologue, providing practical examples and clear explanations to aid in comprehension.', 'chapters': [{'end': 3647.066, 'start': 3392.029, 'title': 'Prolog lists and operations', 'summary': 'Covers the usage of lists in prolog, including adding values, retrieving length, dividing into head and tail parts, using anonymous variables, accessing values, checking for membership, reversing, concatenating, cycling through, and performing operations on list items.', 'duration': 255.037, 'highlights': ['The chapter covers the usage of lists in Prolog, including adding values, retrieving length, dividing into head and tail parts, using anonymous variables, accessing values, checking for membership, reversing, concatenating, cycling through, and performing operations on list items. This is the overarching summary of the chapter covering the various operations and functionalities of lists in Prolog.', "We could also come in here and define a list. Let's go that and check if A is inside of our list. Demonstrates the process of defining a list and checking for the existence of a specific element within the list.", "We're also going to be able to get the length of a list quite easily. 1, 2, 3, like that. Highlights the ease of retrieving the length of a list in Prolog.", "And let's say we want to store that value inside of x. Illustrates the process of storing the length of a list inside a variable for further use.", "We could also use a pen to concatenate two lists. Shows the usage of the 'append' function to concatenate two lists together."]}, {'end': 3816.216, 'start': 3647.126, 'title': 'Understanding strings in prologue', 'summary': 'Explains the process of converting strings into ascii characters and back, appending strings, accessing characters, and determining the length of a string in prologue, providing practical examples and clear explanations to aid in comprehension.', 'duration': 169.09, 'highlights': ['The process of converting strings into ASCII characters and back is explained, with practical examples provided, aiding in understanding the concept.', 'Appending strings and combining string lists into a new string list is demonstrated, providing a clear understanding of the process.', 'Accessing specific characters within a string and outputting them is demonstrated, with clear examples provided to aid in comprehension.', 'The method to determine the length of a string is explained, providing practical knowledge to manipulate strings in Prologue.']}], 'duration': 424.187, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/SykxWpFwMGs/pics/SykxWpFwMGs3392029.jpg', 'highlights': ['The chapter covers the usage of lists in Prolog, including various operations and functionalities.', 'Illustrates the process of defining a list and checking for the existence of a specific element.', 'Highlights the ease of retrieving the length of a list in Prolog.', 'Illustrates the process of storing the length of a list inside a variable for further use.', "Shows the usage of the 'append' function to concatenate two lists together.", 'Explains the process of converting strings into ASCII characters and back with practical examples.', 'Demonstrates appending strings and combining string lists into a new string list.', 'Illustrates accessing specific characters within a string and outputting them.', 'Explains the method to determine the length of a string, providing practical knowledge.']}], 'highlights': ['The video tutorial covers everything in a standard prologue book in one video, addressing the poor quality and complexity of existing prologue literature.', 'Emphasis is placed on providing numerous examples to clarify the language and make prologue very understandable.', "For Mac users, installation is straightforward by using Homebrew and running a simple command 'brew install gnu prolog' in the terminal to install Prolog.", 'The chapter covers the installation process of GNU debugger, make, Prolog, and C++ on Windows and Mac, demonstrating the steps involved, including downloading, installation, and verification, as well as the creation and loading of a knowledge base in Prolog.', 'Introducing the concept of facts, predicate, and constants in Prolog.', 'The use of trace in Prolog aids in understanding how it processes data, achieves goals, and evaluates true or false outcomes, providing valuable insight into the functioning of Prolog and its decision-making process.', 'The chapter covers the usage of lists in Prolog, including various operations and functionalities.', 'The chapter introduces complex terms and structures, explaining the definition of vertical and horizontal lines with examples.', 'Introduces modulus operation in prologue programming, showcasing 7 divided by 2 resulting in a remainder of 1.', 'Explains file operations, including writing text to a file and reading from a file stream.']}