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#31
Announcements / Our Website is Live, Welcome!
Mar 24, 2024, 03:03 PM
We are thrilled to announce that Cikfo[dot]com is now live and ready to welcome you to our programming community!

Explore, Learn, Connect
Step into the exciting world of programming languages with Cikfo[dot]com. Whether you are a coding newcomer or a seasoned developer, our website is designed to be a hub of knowledge, collaboration, and creativity. Explore diverse topics, engage in discussions, and expand your coding skills with us.

Join the Conversation
Join our vibrant community of programmers where you can ask questions, share insights, and connect with fellow coders from around the globe. Let's learn together, support each other, and build a strong network of tech enthusiasts.

Spread the Word
Help us grow our community by spreading the word about Cikfo[dot]com! Share our website with your friends, colleagues, and anyone who shares a passion for coding and technology. Together, we can make Cikfo[dot]com the ultimate destination for all things programming.

Feedback and Suggestions
We value your feedback and suggestions as we strive to enhance your experience on Cikfo[dot]com. Feel free to reach out to us at feedback@cikfo[dot]com with any comments, ideas, or questions you may have. Your input is invaluable to us.

Thank You for Joining Us
Thank you for being a part of our community! We are excited to have you on board as we embark on this coding journey together. Welcome to Cikfo[dot]com – your gateway to the world of programming excellence.
#32
About us / Welcome to Cikfo.com - About Us
Mar 24, 2024, 03:01 PM
At Cikfo, we are passionate about software development and creating a vibrant community where programmers of all levels can come together to learn, share knowledge, and grow together.

Who We Are
We are a team of dedicated professionals and coding enthusiasts who believe that technology has the power to transform the world. Our mission is to provide a platform where learners and experts can engage in meaningful discussions, ask questions, and find solutions related to various programming languages.

Our Vision
Our vision is to become the go-to destination for anyone looking to expand their knowledge of programming languages, stay updated on the latest trends in the tech industry, and connect with like-minded individuals.

Join Our Community
Whether you're a beginner taking your first steps into the world of coding or a seasoned developer looking to share your expertise, Cikfo[dot]com is the place for you. Join us today and be part of a dynamic community that fosters learning, collaboration, and innovation. Together, let's code a brighter future!

Get in Touch
Have any questions or feedback for us? Feel free to reach out to our team at contact@cikfo[dot]com. We'd love to hear from you! Thank you for being a part of the Cikfo community. Happy coding.
#33
Golang / Golang: Creating Multiple Variables (Video Lecture Course)
Dec 05, 2023, 01:57 PM
#34
Html / HTML: We are Learning the Image Tag (Video Lesson)
Dec 05, 2023, 01:49 PM
#35
Swift / Swift Dictionary Topic Description (Video Lecture Course)
Nov 09, 2023, 10:55 PM
#36
Ruby / Ruby Variables (Video Lecture Course)
Nov 09, 2023, 10:55 PM
#37
Golang / Golang FOR Cycle (Video Lecture Course)
Nov 09, 2023, 10:54 PM
#38
Asp .Net / Asp.net ViewComponent: A Comprehensive Guide
Apr 26, 2023, 12:15 PM
In the world of web development, Asp[dot]Net Core is a popular framework for building modern web applications. Asp[dot]Net ViewComponent is a powerful feature in Asp[dot]Net Core that allows developers to encapsulate a chunk of UI logic and reuse it across multiple views. In this article, we'll explore what Asp[dot]Net ViewComponent is, its benefits, how to create and use it, and some best practices.

Table of Contents
  • Introduction
  • What is Asp[dot]Net ViewComponent?
  • Benefits of Asp[dot]Net ViewComponent
  • How to create an Asp[dot]Net ViewComponent?
  • Using Asp[dot]Net ViewComponent in a view
  • Best practices for using Asp[dot]Net ViewComponent
  • Conclusion
  • FAQs

1. Introduction
Asp[dot]Net ViewComponent is a feature in Asp[dot]Net Core that enables you to create and reuse chunks of UI logic across multiple views. This includes HTML markup, CSS styles, and JavaScript code. It's a great way to modularize UI components and avoid code duplication.

2. What is Asp[dot]Net ViewComponent?
Think of Asp[dot]Net ViewComponent as a mini-controller that renders a partial view. It has its own set of actions, models, and views just like a regular controller, but it's meant to be used inside a view. An Asp[dot]Net ViewComponent can be rendered using a tag helper or a method call.

3. Benefits of Asp[dot]Net ViewComponent
There are many benefits to using Asp[dot]Net ViewComponent:
  • Encapsulates UI logic: With Asp[dot]Net ViewComponent, you can encapsulate a piece of UI logic (like a login form, a search box, or a navigation menu) into a reusable component. This makes your code more modular, maintainable, and testable.
  • Reduces code duplication: By reusing an Asp[dot]Net ViewComponent across multiple views, you can avoid duplicating the same HTML markup, CSS styles, and JavaScript code.
  • Improves performance: Asp[dot]Net ViewComponent is a lightweight feature that doesn't add much overhead to your application. It renders its own partial view asynchronously, which can improve the overall performance of your application.

4. How to create an Asp[dot]Net ViewComponent?
Creating an Asp[dot]Net ViewComponent is easy. Here are the steps:
  • Create a new class that inherits from ViewComponent.
  • Implement a method that returns a ViewComponentResult.
  • Create a partial view for the component.
  • Decorate the method with the [ViewComponent] attribute.

Here's an example of an Asp[dot]Net ViewComponent that displays a list of products:
Code Select
public class ProductListViewComponent : ViewComponent
{
    private readonly IProductRepository _productRepository;

    public ProductListViewComponent(IProductRepository productRepository)
    {
        _productRepository = productRepository;
    }

    public async Task<IViewComponentResult> InvokeAsync(int categoryId)
    {
        var products = await _productRepository.GetProductsByCategoryAsync(categoryId);
        return View(products);
    }
}

In this example, we have created a new class called ProductListViewComponent that inherits from ViewComponent. We have also implemented a method called InvokeAsync that takes a categoryId parameter and returns an IViewComponentResult. This method retrieves a list of products from a repository and passes it to a partial view.

5. Using Asp[dot]Net ViewComponent in a view
Once you've created an Asp[dot]Net ViewComponent, you can use it in a view by calling its tag helper or its method name. Here's an example of using the ProductListViewComponent:
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<vc:product-list category-id="1" />

or
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@await Component.InvokeAsync("ProductList", new { categoryId = 1 })

In this example, we are calling the ProductListViewComponent and passing it a categoryId of 1 using a tag helper.

6. Best practices for using Asp[dot]Net ViewComponent
Here are some best practices for using Asp[dot]Net ViewComponent:
  • Keep it small: Asp[dot]Net ViewComponent is meant to be used for small UI components. Avoid creating complex components that have their own actions, models, and views.
  • Use dependency injection: Asp[dot]Net ViewComponent can take advantage of dependency injection to retrieve data from repositories, services, or other components.
  • Follow naming conventions: Asp[dot]Net ViewComponent has its own set of naming conventions. Make sure you follow them to avoid confusion.
  • Test your components: Asp[dot]Net ViewComponent can be tested just like any other component in Asp[dot]Net Core. Make sure you test your components thoroughly before using them in production.

7. Conclusion
Asp[dot]Net ViewComponent is a powerful feature in Asp[dot]Net Core that allows you to create and reuse UI components across multiple views. By encapsulating UI logic into reusable components, you can improve the modularity, maintainability, and testability of your code. Asp[dot]Net ViewComponent is easy to use and has many benefits, including reduced code duplication, improved performance, and enhanced code organization. When creating an Asp[dot]Net ViewComponent, make sure you follow best practices such as keeping it small, using dependency injection, and following naming conventions. With these tips in mind, you can take full advantage of Asp[dot]Net ViewComponent and build modular, maintainable, and scalable web applications.

8. FAQs
  • Can I use Asp[dot]Net ViewComponent with other front-end frameworks like React or Angular?
    Yes, Asp[dot]Net ViewComponent can be used with other front-end frameworks. You can render an Asp[dot]Net ViewComponent inside a React or Angular component.
  • How does Asp[dot]Net ViewComponent differ from a partial view?
    Asp[dot]Net ViewComponent is similar to a partial view, but it has its own set of actions, models, and views. It's meant to be used as a standalone component that can be reused across multiple views.
  • Can I use Asp[dot]Net ViewComponent with Razor Pages?
    Yes, Asp[dot]Net ViewComponent can be used with Razor Pages. You can call an Asp[dot]Net ViewComponent from a Razor Pages view using its tag helper or method name.
  • Can I pass parameters to an Asp[dot]Net ViewComponent?
    Yes, you can pass parameters to an Asp[dot]Net ViewComponent using attributes or method parameters.
  • Is Asp[dot]Net ViewComponent thread-safe?
    Yes, Asp[dot]Net ViewComponent is thread-safe. It uses asynchronous rendering to avoid blocking the main thread.

#39
SQL / SQL Date Functions: Formatting, Adding-Subtracting, and Other Operations
Apr 26, 2023, 11:44 AM
In this article, we will dive into the world of SQL date functions and explore how they can be used to manipulate and extract data from our databases. We'll cover a range of topics, including converting date formats, adding and subtracting dates, working with time zones, and more.

Introduction to SQL Date Functions
When working with databases, it's important to be able to work with dates and times effectively. SQL provides a range of built-in functions that allow us to manipulate and extract data based on date and time values. These functions are incredibly useful for analyzing trends, tracking changes over time, and calculating durations between events.

Converting Date Formats
One of the most common tasks in SQL is converting dates between different formats. This is particularly important when importing data from external sources or when working with different applications that use different date formats. In SQL, we can use the CONVERT() function to perform these conversions.

Example: Converting a Date to YYYY-MM-DD format
Suppose we have a date value in the format MM/DD/YYYY, but we want to convert it to the more standard YYYY-MM-DD format. We can do this using the following SQL statement:
Code Select
SELECT CONVERT(varchar, GETDATE(), 23);
This will return the current date in the YYYY-MM-DD format.

Adding and Subtracting Dates
Another common task in SQL is adding or subtracting a given number of days, months, or years from a date value. SQL provides a range of functions for performing these operations, including DATEADD() and DATEDIFF().

Example: Adding 30 Days to a Date
Suppose we have a date value and we want to add 30 days to it. We can do this using the following SQL statement:
Code Select
SELECT DATEADD(day, 30, '2023-04-26');
This will return a date that is 30 days in the future from the given date.

Working with Time Zones
When working with data across different time zones, it's important to be able to convert dates and times between the local time zone and UTC (Coordinated Universal Time). SQL provides functions for performing these conversions, including SYSUTCDATETIME() and SWITCHOFFSET().

Example: Converting Local Time to UTC
Suppose we have a date value in the local time zone and we want to convert it to UTC. We can do this using the following SQL statement:

Code Select
SELECT SWITCHOFFSET(CONVERT(datetimeoffset, '2023-04-26 12:00:00', 120), '+00:00');
This will return the equivalent date and time in UTC.

Date Arithmetic
SQL also provides a range of functions for performing arithmetic operations on date values. These include finding the difference between two dates, determining the day of the week for a given date, and more.

Example: Finding the Difference Between Two Dates
Suppose we want to find the number of days between two date values. We can do this using the following SQL statement:
Code Select
SELECT DATEDIFF(day, '2023-04-26', '2023-05-01');

This will return the number of days between the two dates.

Conclusion
In this article, we've covered a range of SQL date functions that are useful for manipulating and extracting data based on date and time values. By mastering these functions, you'll be better equipped to work with databases and perform complex analyses on your data.

FAQs
  • What is the purpose of SQL date functions?
    SQL date functions allow us to manipulate and extract data based on date and time values in our databases.
  • How do I convert a date to a different format in SQL?
    You can use the
    CONVERT()
     function to convert a date to a different format in SQL.
  • Can I add or subtract days from a date value in SQL?
    Yes, you can use the
    DATEADD()
     function to add or subtract a given number of days from a date value in SQL.
  • How do I work with time zones in SQL?
    You can use functions like
    SYSUTCDATETIME()
     and
    SWITCHOFFSET()
     to convert dates and times between local time and UTC.
  • What kinds of arithmetic operations can I perform on date values in SQL?
    You can find the difference between two dates, determine the day of the week for a given date, and perform other arithmetic operations using SQL date functions.

#40
Javascript / The Ultimate Guide to JavaScript Functions
Apr 07, 2023, 01:30 PM
I. Introduction
JavaScript is a popular programming language used in web development. In this language, functions play a big role. In this article, information will be given about JavaScript functions.

A. Definition of JavaScript Functions
JavaScript functions are pieces of code written to perform a specific task. They can be called multiple times to perform the same task, making the code reusable and easier to manage.

B. Importance of Functions in JavaScript
Functions are important in JavaScript because they allow for better organization and structure in the code. They also make the code more readable and maintainable. Functions can also be reused, making the code more efficient and reducing the likelihood of errors.

C. Purpose of the Article
The purpose of this article is to provide a comprehensive guide to JavaScript functions. The article will cover the basics of functions, including how to define and create them, function scopes, higher-order functions, closures, recursion, callbacks, and the "this" keyword. The article will also cover common function methods in JavaScript and conclude with a summary of key points and frequently asked questions.

II. Understanding Functions in JavaScript
A. What are Functions?
Functions are blocks of code that perform a specific task. They are reusable, meaning they can be called multiple times to perform the same task. Functions can also accept inputs in the form of parameters and return a value.

B. How to Define a Function in JavaScript
Functions in JavaScript can be defined in two ways: function declaration and function expression. A function declaration starts with the keyword "function" followed by the name of the function and its parameters within parentheses. Function expressions, on the other hand, are created by assigning a function to a variable.
Code Select
// Function Declaration
function greet(name) {
  console.log("Hello, " + name);
}
// Function Expression
const greet = function(name) {
  console.log("Hello, " + name);
}C. Function Parameters
Function parameters are the values that are passed to the function when it is called. These parameters can be used within the function to perform its task.
Code Select
function greet(name) {
  console.log("Hello, " + name);
}
greet("John"); // Output: Hello, JohnD. Function Return Values
Functions in JavaScript can also return a value. The return statement is used to specify the value that should be returned by the function.
Code Select
function square(num) {
  return num * num;
}
const result = square(4);
console.log(result); // Output: 16III. Creating Functions in JavaScript
A. Function Declaration
Function declarations are created using the keyword "function" followed by the name of the function and its parameters within parentheses.
Code Select
function greet(name) {
  console.log("Hello, " + name);
}
B. Function Expression
Function expressions are created by assigning a function to a variable.
Code Select
const greet = function(name) {
  console.log("Hello, " + name);
}
C. Arrow Functions
Arrow functions are a shorthand way of creating functions in JavaScript. They have a shorter syntax compared to traditional function expressions.
Code Select
const greet = (name) => {
  console.log("Hello, " + name);
}
D. Anonymous Functions
Anonymous functions are functions that do not have a name. They are often used as arguments for other functions.
Code Select
const numbers = [1, 2, 3, 4];
numbers.forEach(function(num) {
  console.log(num);
});
// Output:
// 1
// 2
// 3
// 4
IV. Function Scopes in JavaScript
A. Global Scope
Variables declared outside of any function are in the global scope and can be accessed from anywhere in the code.
Code Select
let name = "John";
function greet() {
  console.log("Hello, " + name);
}
greet(); // Output: Hello, John
B. Local Scope
Variables declared within a function are in the local scope and can only be accessed within that function.
Code Select
function greet(name) {
  let message = "Hello, " + name;
  console.log(message);
}
greet("John"); // Output: Hello, John
console.log(message); // Uncaught ReferenceError: message is not defined
C. Block Scope
Variables declared with the "let" or "const" keywords within a block of code are in block scope and can only be accessed within that block.
Code Select
if (true) {
  let message = "Hello, John";
  console.log(message); // Output: Hello, John
}
console.log(message); // Uncaught ReferenceError: message is not defined
V. Higher-Order Functions in JavaScript
A. What are Higher-Order Functions?
Higher-order functions are functions that accept other functions as arguments or return a function as a result.

B. Why Use Higher-Order Functions?
Higher-order functions make the code more flexible and reusable. They also allow for abstracting repetitive logic into reusable functions.

C. Examples of Higher-Order Functions
A common example of a higher-order function in JavaScript is the

Code Select
Array.prototype.map() method, which takes a callback function as an argument and returns a new array with the results of the callback function applied to each element.

Code Select
const numbers = [1, 2, 3, 4];
const doubledNumbers = numbers.map(function(num) {
  return num * 2;
});
console.log(doubledNumbers); // Output: [2, 4, 6, 8]
VI. Closures in JavaScript
A. What are Closures?
Closures are functions that have access to variables in their outer scope even after the outer function has returned.

B. How Closures Work in JavaScript
Closures are created when a function is defined inside another function. The inner function has access to variables in the outer function's scope even after the outer function has returned.
Code Select
function outerFunction() {
  let message = "Hello, John";
  function innerFunction() {
    console.log(message);
  }
  return innerFunction;
}
const closure = outerFunction();
closure(); // Output: Hello, John
C. Examples of Closures
Closures can be used to create private variables in JavaScript by returning an object with methods that have access to the private variables.
Code Select
function createCounter() {
  let count = 0;
  return {
    increment: function() {
      count++;
    },
    getCount: function() {
      return count;
    }
  };
}
const counter = createCounter();
counter.increment();
counter.increment();
console.log(counter.getCount()); // Output: 2
VII. Recursion in JavaScript
A. What is Recursion?
Recursion is a technique in which a function calls itself.

B. How Recursion Works in JavaScript
Recursion works by breaking a problem down into smaller problems and solving each of those smaller problems. The function calls itself with a smaller version of the problem until it can no longer be divided, at which point the solution is returned.

C. Examples of Recursion
A common example of recursion is calculating the factorial of a number.
Code Select
function factorial(num) {
  if (num === 1) {
    return 1;
  }
  return num * factorial(num - 1);
}
console.log(factorial(5)); // Output: 120VIII. Callbacks in JavaScript
A. What are Callbacks?
Callbacks are functions that are passed as arguments to another function and are executed after the outer function has completed.

B. How Callbacks Work in JavaScript
Callbacks are often used in asynchronous programming, where a function needs to wait for some data to be returned before it can continue. The callback function is passed as an argument to the outer function, which is executed after the data has been returned.

C. Examples of Callbacks
A common example of a callback in JavaScript is the
Code Select
setTimeout() function, which takes a callback function and a delay time as arguments and executes the callback function after the specified time has passed.

Code Select
setTimeout(function() {
  console.log("Hello, John");
}, 1000); // Output: Hello, John (after 1 second)
IX. The "this" Keyword in JavaScript
A. Understanding the "this" Keyword
The "this" keyword refers to the object that the function is a method of.
B. How the "this" Keyword Works in JavaScript
The value of the "this" keyword can be changed using the
Code Select
call(),
Code Select
apply(), and
Code Select
bind() methods.
C. Examples of the "this" Keyword
The following example demonstrates how the value of the "this" keyword can be changed using the
Code Select
call() method.
Code Select
const person = {
  name: "John",
  greet: function() {
    console.log("Hello, " + this.name);
  }
};
person.greet(); // Output: Hello, John
const anotherPerson = {
  name: "Jane"
};
person.greet.call(anotherPerson); // Output: Hello, Jane
X. Common Function Methods in JavaScript
A. .call()
The
Code Select
.call() method allows you to invoke a function and set the value of "this" within that function.
B. .apply()
The
Code Select
.apply() method works similarly to the
Code Select
.call() method, but it accepts an array of arguments instead of separate arguments.
C. .bind()
The
Code Select
.bind() method creates a new function with the value of "this" set to the specified value.

XI. Conclusion
A. Summary of Key Points
In this article, information has been given about JavaScript functions, including how to define and create them, function scopes, higher-order functions, closures, recursion, callbacks, and the "this" keyword. The article has also covered common function methods in JavaScript.

B. Future of Functions in JavaScript
Functions are a fundamental part of JavaScript and will continue to play a big role in the future of the language. With the growing popularity of functional programming, it is likely that functions will become even more important in the years to come.

XII. FAQs

A. What is the difference between a Function Declaration and a Function Expression?
A function declaration starts with the keyword "function" followed by the name of the function and its parameters within parentheses. A function expression, on the other hand, is created by assigning a function to a variable.

B. Can a Function Return Another Function in JavaScript?
Yes, a function can return another function in JavaScript. This is often used in functional programming to create more flexible and reusable code. By returning a function, you can create a new function with specific behavior that can be used in different parts of your code. This allows for code reuse and abstraction of repetitive logic into reusable functions.

C. What is the Purpose of Higher-Order Functions in JavaScript?
Higher-order functions make the code more flexible and reusable. They also allow for abstracting repetitive logic into reusable functions.

D. What is the Purpose of Closures in JavaScript?
Closures are functions that have access to variables in their outer scope even after the outer function has returned. They can be used to create private variables in JavaScript.

E. What is the Purpose of Recursion in JavaScript?
Recursion is a technique in which a function calls itself. It is used to break a problem down into smaller problems and solve each of those smaller problems.

F. What are Callbacks in JavaScript?
Callbacks are functions that are passed as arguments to another function and are executed after the outer function has completed. They are often used in asynchronous programming.
#41
Html / HTML Listing: How to Create Lists on Your Pages?
Apr 07, 2023, 01:08 PM
HTML is one of the building blocks of a web page and you can use many different elements to create the layout of your pages. One of these elements is HTML lists, which you can use to create lists on your web pages. In this article, you will learn about the different methods you can use to create HTML lists and how to use them.

What Are HTML Lists?
HTML lists are a type of element found on web pages. They are used to group related pieces of information together and present them in a structured manner. HTML lists can be used for many different purposes, such as:

  • Creating menus
  • Displaying product features
  • Listing items in a blog post
  • Displaying steps in a tutorial

Types of HTML Lists
There are three different types of HTML lists: ordered lists, unordered lists, and definition lists.

Ordered Lists
Ordered lists are lists that have a specific order to their items. Each item is numbered sequentially, starting from 1. You can create an ordered list in HTML by using the <ol> tag.

Unordered Lists
Unordered lists are lists that do not have a specific order to their items. Each item is preceded by a bullet point. You can create an unordered list in HTML by using the <ul> tag.

Definition Lists
Definition lists are lists that contain a series of terms and their definitions. You can create a definition list in HTML by using the <dl> tag.

Creating HTML Lists
To create an HTML list, you need to use one of the list tags mentioned above. Once you have opened the list tag, you can add items to the list by using the <li> tag. Here's an example of an ordered list:
Code Select
<ol>
  <li>First item</li>
  <li>Second item</li>
  <li>Third item</li>
</ol>

And here's an example of an unordered list:
Code Select
<ul>
  <li>First item</li>
  <li>Second item</li>
  <li>Third item</li>
</ul>

Conclusion
HTML lists are a powerful tool for structuring information on your web pages. By using ordered lists, unordered lists, and definition lists, you can create a wide range of list styles and formats. So, give HTML lists a try on your next web page and see how they can enhance your content!

FAQs
What is the difference between an ordered list and an unordered list in HTML?
Ordered lists have a specific order to their items, while unordered lists do not.

Can I use images in my HTML lists?
Yes, you can use images as bullets in an unordered list.

How do I create a definition list in HTML?
Use the <dl> tag to create the definition list, and the <dt> and <dd> tags to define terms and their definitions.

Can I nest HTML lists inside each other?
Yes, you can nest HTML lists inside each other to create more complex list structures.

Are there any other types of HTML lists?
No, there are only three types of HTML lists: ordered lists, unordered lists, and definition lists.

Can I style my HTML lists using CSS?
Yes, you can use CSS to style your HTML lists by changing the font, color, bullet style, and more.

How many levels of nesting are allowed in HTML lists?
There is no limit to the number of levels of nesting you can use in HTML lists, but keep in mind that too many levels can make your content hard to read.

Can I use HTML lists in emails?
Yes, you can use HTML lists in emails, but be aware that some email clients may not support all HTML elements.

Can I add links to my HTML lists?
Yes, you can add links to your HTML lists by wrapping the link text in an <a> tag.

Can I create custom bullet styles for my HTML lists?
Yes, you can create custom bullet styles for your HTML lists using CSS by specifying the list-style-type property.
#42
Asp .Net / What is Asp Net Tag Helpers? How to use? (Video Lecture)
Feb 03, 2023, 02:33 PM
#43
Asp .Net / Asp Net HTTP Functions (Video Lecture)
Feb 03, 2023, 02:33 PM
#44
Golang / GOLang XML Operations (Video Lecture)
Feb 03, 2023, 02:32 PM
#45
Golang / GOLang Functions (Video Lecture)
Feb 03, 2023, 02:31 PM
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