narayann7

STL cheat sheet.

Vector

initialization :

vector<int> v;
vector<int> v(n); //n is size of array
vector<int> v={1,2,3,4};

narayann7

Steps to host your Telegram bot

Heroku:

• Create a Telegram bot with Telegraf API.
• Create account on Heroku.
• Install Heroku CLI.
• Install and setup git.
• Add micro-bot to the project

  npm i micro-bot 

narayann7

Email validation

//dart
bool isEmail(String email) {
  String reg =
      r'^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$';

  RegExp regExp = RegExp(reg);

narayann7

Git cheat sheet

what is git? : here , install git here

Setup :

• $ git config --global user.name "{name}" for configure username
• $ git config --global user.email "{email}" for configure email
• $ git config --list check all username , email configured or not