Selected Topics in IT

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Welcome to Selected Topics in IT! 🚀 We create short, focused videos that break down programming and tech topics into simple, easy-to-understand lessons. 🎯 Learn Java, C++, Python, JavaScript, PHP, WordPress, and more — explained clearly, one concept at a time. 🧠 Ideal for students, beginners, and anyone looking to strengthen their IT skills. Subscribe now and expand your tech knowledge!

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PHP and MySQL 27: Tokenization — Replacing Sensitive Data with Tokens

PHP and MySQL 27: Tokenization — Replacing Sensitive Data with Tokens Selected Topics in IT

3 views - 5 hours ago

PHP and MySQL 26: Storing Passwords Securely with password_hash()

PHP and MySQL 26: Storing Passwords Securely with password_hash() Selected Topics in IT

1 views - 5 hours ago

PHP and MySQL 25: How a Simple URL Change Can Expose User Data (Authentication vs Authorization)

PHP and MySQL 25: How a Simple URL Change Can Expose User Data (Authentication vs Authorization) Selected Topics in IT

10 views - 1 week ago

PHP and MySQL 24: How to Run PHP Locally and Detect Tampered Data with HMAC

PHP and MySQL 24: How to Run PHP Locally and Detect Tampered Data with HMAC Selected Topics in IT

15 views - 3 weeks ago

jQuery 21: Change Text & Style with jQuery

jQuery 21: Change Text & Style with jQuery Selected Topics in IT

23 views - 1 month ago

jQuery 20: jQuery Hide vs Show vs Toggle

jQuery 20: jQuery Hide vs Show vs Toggle Selected Topics in IT

9 views - 1 month ago

jQuery 19: jQuery vs JavaScript: Click Events Explained

jQuery 19: jQuery vs JavaScript: Click Events Explained Selected Topics in IT

10 views - 2 months ago

JavaScript 29: How to Check for NaN

JavaScript 29: How to Check for NaN Selected Topics in IT

6 views - 2 months ago

JavaScript 28: "" == 0 Is TRUE in JavaScript

JavaScript 28: "" == 0 Is TRUE in JavaScript Selected Topics in IT

14 views - 2 months ago

JavaScript 27: Why [] == false Is TRUE

JavaScript 27: Why [] == false Is TRUE Selected Topics in IT

30 views - 2 months ago

JavaScript 26: Why null == undefined Is TRUE

JavaScript 26: Why null == undefined Is TRUE Selected Topics in IT

36 views - 2 months ago

JavaScript 25: Why 0 == false Is TRUE in JavaScript

JavaScript 25: Why 0 == false Is TRUE in JavaScript Selected Topics in IT

12 views - 2 months ago

JavaScript 24: == vs === — What’s the Difference?

JavaScript 24: == vs === — What’s the Difference? Selected Topics in IT

3 views - 2 months ago

HTML, CSS (Part 62): How margin-bottom Works in CSS (Quick Demo)

HTML, CSS (Part 62): How margin-bottom Works in CSS (Quick Demo) Selected Topics in IT

9 views - 2 months ago

HTML, CSS (Part 61) & jQuery(20): Kids Reward App Update – New Stars & Smiling Avatars

HTML, CSS (Part 61) & jQuery(20): Kids Reward App Update – New Stars & Smiling Avatars Selected Topics in IT

5 views - 2 months ago

HTML, CSS (Part 60) & jQuery(19): Kids Star Sticker Rewards App + Free GitHub Download

HTML, CSS (Part 60) & jQuery(19): Kids Star Sticker Rewards App + Free GitHub Download Selected Topics in IT

19 views - 3 months ago

HTML, CSS (Part 59) & JavaScript (24): Built a Voice Recorder + Beat Lab using ChatGPT

HTML, CSS (Part 59) & JavaScript (24): Built a Voice Recorder + Beat Lab using ChatGPT Selected Topics in IT

29 views - 3 months ago

C# 58: Arrays: 2D vs Jagged — Built Fast with Copilot

C# 58: Arrays: 2D vs Jagged — Built Fast with Copilot Selected Topics in IT

31 views - 5 months ago

C# 57: Create a New .NET Project from the Welcome Page in VS Code

C# 57: Create a New .NET Project from the Welcome Page in VS Code Selected Topics in IT

39 views - 5 months ago

C# 56: Boilerplate Code – Why Modern C# Cuts It Down

C# 56: Boilerplate Code – Why Modern C# Cuts It Down Selected Topics in IT

106 views - 5 months ago

C# 55: Why We Don't Need using System; in C# Anymore

C# 55: Why We Don't Need using System; in C# Anymore Selected Topics in IT

50 views - 6 months ago

C# 54: Why a Loose File Won’t Run in VS Code + Fix ‘No Project to Run’ (2025 GUI Way)

C# 54: Why a Loose File Won’t Run in VS Code + Fix ‘No Project to Run’ (2025 GUI Way) Selected Topics in IT

87 views - 6 months ago

Python 86: The zip() Function: Why Your Data Disappears (and How to Get It Back)

Python 86: The zip() Function: Why Your Data Disappears (and How to Get It Back) Selected Topics in IT

12 views - 6 months ago

Python 85: any() vs all()

Python 85: any() vs all() Selected Topics in IT

14 views - 6 months ago

Python 84: Sort Tuples by Value Using Lambda – Ascending and Descending

Python 84: Sort Tuples by Value Using Lambda – Ascending and Descending Selected Topics in IT

42 views - 7 months ago

Python 83: Lambda Functions – The Easy Intro

Python 83: Lambda Functions – The Easy Intro Selected Topics in IT

16 views - 7 months ago

Python 82: How Python swaps variables in one line (deep dive)

Python 82: How Python swaps variables in one line (deep dive) Selected Topics in IT

19 views - 7 months ago

Python 81: Swapping Two Variables in Python: Traditional vs Pythonic

Python 81: Swapping Two Variables in Python: Traditional vs Pythonic Selected Topics in IT

19 views - 7 months ago

C++ 87: Understanding shared_ptr — how multiple pointers share one object

C++ 87: Understanding shared_ptr — how multiple pointers share one object Selected Topics in IT

67 views - 8 months ago

C++ 86: Converting string to const char* (for C-style functions)

C++ 86: Converting string to const char* (for C-style functions) Selected Topics in IT

98 views - 8 months ago

C++ 85: const char* vs string — What's the difference?

C++ 85: const char* vs string — What's the difference? Selected Topics in IT

229 views - 8 months ago

C++ 84: boolalpha and noboolalpha — Print true/false Instead of 1/0

C++ 84: boolalpha and noboolalpha — Print true/false Instead of 1/0 Selected Topics in IT

87 views - 8 months ago

C++ 83: Understanding auto in Old vs Modern C++ and Why auto Can’t Be Combined with Other Types

C++ 83: Understanding auto in Old vs Modern C++ and Why auto Can’t Be Combined with Other Types Selected Topics in IT

25 views - 8 months ago

C++ 82: How auto Works with Simple Data Types (int, double, etc.)

C++ 82: How auto Works with Simple Data Types (int, double, etc.) Selected Topics in IT

19 views - 8 months ago

C++ 81: What Does 'auto' Do in C++? (with unique_ptr demo)

C++ 81: What Does 'auto' Do in C++? (with unique_ptr demo) Selected Topics in IT

9 views - 8 months ago

C++ 80: Why You Can't Copy a unique_ptr (but you can move it)

C++ 80: Why You Can't Copy a unique_ptr (but you can move it) Selected Topics in IT

51 views - 8 months ago

C++ 79: Smart Pointer: What is unique_ptr in C++? A Smarter Way to Use new

C++ 79: Smart Pointer: What is unique_ptr in C++? A Smarter Way to Use new Selected Topics in IT

14 views - 8 months ago

C++ 78: Why Every new Needs a delete (and Every new[] Needs a delete[])

C++ 78: Why Every new Needs a delete (and Every new[] Needs a delete[]) Selected Topics in IT

38 views - 8 months ago

C++ 77: Stack vs Heap: What's the Difference? (And Why Destructors Matter)

C++ 77: Stack vs Heap: What's the Difference? (And Why Destructors Matter) Selected Topics in IT

24 views - 8 months ago

C++ 76: Fix "Process terminated with status -1073741510" in Code::Blocks

C++ 76: Fix "Process terminated with status -1073741510" in Code::Blocks Selected Topics in IT

192 views - 9 months ago

C++ 75: Fix cin.ignore() Breaking getline() — What Causes It & How to Handle Input Properly

C++ 75: Fix cin.ignore() Breaking getline() — What Causes It & How to Handle Input Properly Selected Topics in IT

362 views - 9 months ago

C++ 74: Fix 'expression must have a constant value' | Works in GCC (Dev-C++, Code::Blocks), Not MSVC

C++ 74: Fix 'expression must have a constant value' | Works in GCC (Dev-C++, Code::Blocks), Not MSVC Selected Topics in IT

59 views - 9 months ago

C++ 73: How to Install Code::Blocks and Run Your First C++ Program 🖥️ | Step-by-Step for Beginners

C++ 73: How to Install Code::Blocks and Run Your First C++ Program 🖥️ | Step-by-Step for Beginners Selected Topics in IT

124 views - 9 months ago

Java 130: Converting traditional Javadoc to markdown documentation comments – using ChatGPT

Java 130: Converting traditional Javadoc to markdown documentation comments – using ChatGPT Selected Topics in IT

120 views - 9 months ago

Java 129: Escaping HTML in Javadoc with pre & {@literal}

Java 129: Escaping HTML in Javadoc with pre & {@literal} Selected Topics in IT

44 views - 9 months ago

Java 128: How to write HTML inside Javadoc comments

Java 128: How to write HTML inside Javadoc comments Selected Topics in IT

81 views - 9 months ago

Java 127: What is a floating Javadoc comment? (And how to fix it)

Java 127: What is a floating Javadoc comment? (And how to fix it) Selected Topics in IT

34 views - 9 months ago

Java 126: Resolve warning: use of default constructor, which does not provide a comment

Java 126: Resolve warning: use of default constructor, which does not provide a comment Selected Topics in IT

188 views - 9 months ago

Java 125: JavaDoc malformed HTML error: Why {@literal} Matters!

Java 125: JavaDoc malformed HTML error: Why {@literal} Matters! Selected Topics in IT

49 views - 9 months ago

Java 124: Enhance your JavaDocs with inline tags

Java 124: Enhance your JavaDocs with inline tags Selected Topics in IT

35 views - 10 months ago

Java 123: Fixing @ symbol issues in Javadoc comments

Java 123: Fixing @ symbol issues in Javadoc comments Selected Topics in IT

30 views - 10 months ago

Java 122: How to display author and version in Javadoc

Java 122: How to display author and version in Javadoc Selected Topics in IT

71 views - 10 months ago

Java 121: Using block tags to further structure your documentation comments

Java 121: Using block tags to further structure your documentation comments Selected Topics in IT

31 views - 10 months ago

Java 120: Generate documentation comments using ChatGPT for our Java 118 program

Java 120: Generate documentation comments using ChatGPT for our Java 118 program Selected Topics in IT

41 views - 10 months ago

Java 119: Fix 'javadoc' Not Recognized & No Modules Specified Errors in Java (with ChatGPT)

Java 119: Fix 'javadoc' Not Recognized & No Modules Specified Errors in Java (with ChatGPT) Selected Topics in IT

233 views - 10 months ago

WordPress 9: Remove custom login & use WordPress built-in login page

WordPress 9: Remove custom login & use WordPress built-in login page Selected Topics in IT

26 views - 11 months ago

WordPress 8: Enable and view error logging via Hostinger file manager

WordPress 8: Enable and view error logging via Hostinger file manager Selected Topics in IT

487 views - 11 months ago

WordPress 7: Hide the WordPress admin toolbar for all non-administrators after login

WordPress 7: Hide the WordPress admin toolbar for all non-administrators after login Selected Topics in IT

38 views - 11 months ago

WordPress 6: Hide the WordPress admin toolbar for a selected user after login

WordPress 6: Hide the WordPress admin toolbar for a selected user after login Selected Topics in IT

24 views - 11 months ago

WordPress 5: Create and add menu with links and a custom logout link

WordPress 5: Create and add menu with links and a custom logout link Selected Topics in IT

67 views - 11 months ago