Subrat subratamal

git branch --set-upstream-to <remote-branch>
# example
git branch --set-upstream-to origin feature-branch

# show up which remote branch a local branch is tracking
git branch -vv

sets the default remote branch for the current local branch.

Nested Routers in Express.js

Express makes it easy to nest routes in your routers. But I always had trouble accessing the request object's .params when you had a long URI with multiple parameters and nested routes.

Let's say you're building routes for a website www.music.com. Music is organized into albums with multiple tracks. Users can click to see a track list. Then they can select a single track and see a sub-page about that specific track.

At our application level, we could first have a Router to handle any requests to our albums.

const express = require('express');

How to Download iOS Simulator (Xcode) in Command Line and Install it

For faster connection speed and more flexibility.

Steps

Start Xcode in command line by running this in commandline /Applications/Xcode.app/Contents/MacOS/Xcode
Start downloading of the simulator
Cancel it. YES CANCEL IT!
You will get a message like this:

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

Clarify and agree on the scope of the system

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

Clarify and agree on the scope of the system

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

	function asyncFunc(e) {
	return new Promise((resolve, reject) => {
	setTimeout(() => resolve(e), e * 1000);
	});
	}

	const arr = [1, 2, 3];
	let final = [];

	function workMyCollection(arr) {

	<!-- Facebook Custom Audience Pixel Code - Placed on Every Page of Site -->
	<script>
	!function(f,b,e,v,n,t,s){if(f.fbq)return;n=f.fbq=function(){n.callMethod?
	n.callMethod.apply(n,arguments):n.queue.push(arguments)};if(!f._fbq)f._fbq=n;
	n.push=n;n.loaded=!0;n.version='2.0';n.queue=[];t=b.createElement(e);t.async=!0;
	t.src=v;s=b.getElementsByTagName(e)[0];s.parentNode.insertBefore(t,s)}(window,
	document,'script','//connect.facebook.net/en_US/fbevents.js');
	fbq('init', '{{facebook pixel}}');
	fbq('track', 'PageView');
	</script>

	import MessageQueue from 'react-native/Libraries/BatchedBridge/MessageQueue.js';

	const WHITELIST = ['UIManager'];
	const NOOP = () => { };

	let queue = [];
	let now = 0;
	export default {
	start() {
	MessageQueue.spy(msg => {

	/* eslint-disable prefer-template */

	const path = require('path');
	const aliases = require('./aliases');

	// ///////////////////////////////////////////////////////////////
	// ////////////////// PLUGINS ////////////////////////////////
	// ///////////////////////////////////////////////////////////////

	const commonPlugins = [

	# From http://garmoncheg.blogspot.com/2012/06/pretty-git-log.html
	git config --global alias.lg "log --color --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit --"