Md Shoriful Islam Ashiq

Git Cheat Sheet with 40+ commands & concepts Tired of memorizing git commands? Here is a cheat sheet with 40+ commands to simplify your life. 1. Initialize a local repository git init <directory> The <directory> is optional. If you don't specify it, the current directory will be used. 2. Clone a remote repository git clone <url> 3. Add a file to the staging area git add <file> To add all files in the current directory, use . in place of <file>. git add . 4. Commit changes git commit -m "<message>" If you want to add all changes made to tracked files & commit git commit -a -m "<message>" # or git commit -am "<message>" 5. Remove a file from the staging area git reset <file> 6. Move or rename a file git mv <current path> <new path> 7. Remove a file from the repository git rm <file> You can also remove it from staging area only using --cached flag git rm --cached <file> ...

 C++ ios Library - Boolalpha Function Description It is used to sets the boolalpha format flag for the str stream. When the boolalpha format flag is set, bool values are inserted/extracted by their textual representation: either true or false, instead of integral values. Declaration Following is the declaration for std::boolalpha function. ios_base& boolalpha (ios_base& str); Parameters str − Stream object whose format flag is affected. Return Value It returns Argument str. Exceptions Basic guarantee − if an exception is thrown, str is in a valid state. Data races It modifies str. Concurrent access to the same stream object may cause data races. Example In below example explains about std::boolalpha function.  Live Demo #include <iostream>      int main () {    bool b = true;    std::cout << std::boolalpha << b << '\n';    std::cout << std::noboolalpha << b << '\n';    retu...

C++ complete roadmap # programming # tutorial # beginners # cpp Let's jump in! If you are a beginner I will suggest you make a timetable of at least 45 days which will be sufficient in order to get a really good understanding of C++. Now, you can break your 45 days into 6 weeks and start with the concepts. 1st Week : Now, these seven days will introduce you to something that you have no previous knowledge of. So make sure you understand the foundations well and give a kickstart to the world of programming. What is C++? It’s history and features. Understanding and writing our first Hello World program in C++. Tokens Variables, Datatypes. Keywords How to take input from the user? Operators Arithmetic Operators. Logical Operators. Relational Operators. Other operators. Selection Statements if statements if-else else-if switch 2nd Week : Now you have understood the basic units of a program well. Its time to take a step forward. So, schedule yourself to learn the following topics. Loops...

Solution of Codeforces Round #831 (Div. 1 + Div. 2) || Tutorial of Codeforces Round #831 (Div. 1 + Div. 2) Codeforces Round #831 (Div. 1 + Div. 2, based on COMPFEST 14 Final) Editorial 1740A. Factorise N+M Author:  Pyqe Developer:  Pyqe Tutorial 1740A - Factorise N+M There are multiple solutions for this problem. We will discuss two of them. One solution is to choose  m = n m = n . This always guarantees that  m m  is prime, because  n n  is always prime. And we can see that  n + m = n + n = 2 n n + m = n + n = 2 n , which is always not prime, because  n > 1 n > 1  always holds. Another solution is to choose  m = 7 m = 7 . If  n n  is odd, then  n + m n + m  will be an even number greater than  2 2  and therefore not prime. Otherwise  n n  is even. The only even number prime number is  2 2  and it can be verified that  2 + 7 = 9 2 + 7 = 9  is not a prime number. Time ...