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Using Generic in TypeScript about types in the Code

By Md Shoriful Islam
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# Using Generic in TypeScript about types \<T> in the Code ## Question 1: Here what is this <T> means? ```typescript const addID = <T>(obj: T) => {   let ID = Math.floor(Math.random() * 100);   return ({...obj, ID}); } ``` ## Answer 1: In the code snippet you've provided, `<T>` is a **generic type parameter** in TypeScript. It allows you to write a function that can work with any type of object while still maintaining that object's specific type information. When you use the function `addID`, you can pass in an object of any type, and TypeScript will understand that the returned object will be of the same type as the input, plus the additional `ID` property. Here's a breakdown of how it works: ```typescript const addID = <T>(obj: T) => {   let ID = Math.floor(Math.random() * 100);   return ({...obj, ID}); } ``` - `<T>`: Declares a generic type `T`. - `(obj: T)`: Indicates that the function takes an argument `obj` of type `T`....
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Usage of Common “Header files” in C programming

By Md Shoriful Islam
  Each of these header files serves a specific purpose in a C program: stdio.h : This header file stands for "standard input-output header" and provides functions for input and output operations such as  printf()  and  scanf() . stdlib.h : It stands for "standard library" and provides functions such as memory allocation ( malloc() ,  calloc() ,  free() ), random number generation ( rand() ,  srand() ), and other utility functions. string.h : This header file provides functions for manipulating strings such as  strcpy() ,  strcat() ,  strlen() , etc. conio.h : This header file provides functions mainly for console input and output operations in DOS and Windows environments. Functions like  getch()  and  clrscr()  are included in this header file. However, note that it's not a standard C library and is often not available in many modern compilers or platforms. time.h : This header file provides functions to work with da...
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Easiest way to print `int 128 bit` or`unsigned int 128 bit`

By Md Shoriful Islam
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  To print `__int128`, you must use `__int128_t`data type. Because there is no data type named __int128. At least I didn’t find any till now. And You must use “typecasting” every time in assigning value and outputting values. you must use format specifier `%lld` for `__int128_t` and `%llu`for `__uint128_t`. in C++, `std::cout`printing… you must use `static_cast <long long> (var_name)` Code: # include <iostream> int main () { // int 128 bit __int128_t var = ( long long ) -23542342345435 ; // unsigned int 128 bit __uint128_t var2 = ( long long ) 64324234234234 ; // printing in c++ std::cout << "int 128 bit: " << static_cast < long long >(var) << std::endl; // printing in c printf ( "int 128 bit: %lld\n" , ( long long )var); // printing in c++ std::cout << "unsinged int 128 bit: " << static_cast < long long >(var2) << std::endl; // printing in c printf ( "unsinged int 128 bi...
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Whiteboarding Interviews

By Md Shoriful Islam
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 ⭕ Whiteboarding interviews are a common way of assessing the technical and non-technical skills of candidates for software development positions. They involve solving a coding problem or designing a system on a whiteboard, either in person or virtually, while explaining your approach and reasoning to the interviewer.  ⭕ Some of the benefits of whiteboarding interviews are that they can test your problem-solving ability, communication skills, and coding proficiency in a realistic scenario. They can also help you demonstrate your creativity, collaboration, and passion for the role. However, some of the drawbacks of whiteboarding interviews are that they can be stressful, artificial, and biased. They can also favor memorization over understanding and overlook other aspects of your skills and experience.  ⭕ If you want to ace a whiteboarding interview, you should practice beforehand, prepare for the interview setting, set objectives and expectations, create a good candidate ...
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Version Control with Git: A Beginner’s Guide

By Md Shoriful Islam
Version Control with Git: A Beginner’s Guide If you are a developer, you probably know how important it is to keep track of your code changes and collaborate with other developers on a project. But how do you do that effectively and efficiently? The answer is version control. Version control is a system that records changes to a file or set of files over time so that you can recall specific versions later. It allows you to revert files back to a previous state, compare changes over time, see who last modified something, and more. Version control also enables you to work with other developers on the same code base without stepping on each other’s toes. One of the most popular version control systems in the world is Git. Git is a free and open source distributed version control system that is designed to handle everything from small to very large projects with speed and efficiency. Git has many features that make it superior to other version control systems, such as: Cheap local branchin...
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Callback function in JavaScript

By Md Shoriful Islam
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Callback function in JavaScript What is a callback function in JavaScript? A callback function is a function that is passed as an argument to another function and is executed after the first function has completed its task. Callback functions are useful for handling asynchronous events, such as network requests, file operations, or timers. For example, you can use a callback function to display the result of a calculation after the calculation is done. Callback function in JavaScript Here is a simple example of a callback function in JavaScript: // Define a function that takes a callback as an argument function sayHello (callback) { // Do some task console .log ("Hello, world!"); // Invoke the callback function callback (); } // Define another function function sayGoodbye () { // Do some task console .log ("Goodbye, world!"); } // Call the first function and pass the second function as a callback sayHello (sayGoodbye); // The output will be: // Hello, wo...
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