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#SOLID Principles with ruby examples

##SRP - Single responsibility principle A class should have only a single responsibility.

Every class should have a single responsibility, and that responsibility should be entirely encapsulated. All its services should be narrowly aligned with that responsibility, this embrace the high cohesion.

##OCP - Open/closed principle Software entities should be open for extension, but closed for modification.

Create-react-app

Create React apps with no build configuration.

Thanks to create-react-app. It's saves a lot of my time. I remember several months ago I had to setup a lot just for a react app, webpack, babel, test environment and so on... Fortunately, everything becomes easy now. Though you have many choices of start boiler plate, you worth trying this.

React router

If you are build a SPA with react, you probably use react-router.

Branching

Quick Legend

Description, Instructions, Notes

Instance	Branch

Knex Setup Guide

Create your project directory

Create and initialize your a directory for your Express application.

$ mkdir node-knex-demo
$ cd node-knex-demo
$ npm init

Node.js Express JSON API - CRUD Stickers We'll be using:

Postgres for our database

knex.js for our database migrations, seeds and queries.

express.js for our JSON routes

Mocha, Chai and SuperTest to test our routes

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

	#!/bin/bash
	# Get postman app
	wget https://dl.pstmn.io/download/latest/linux64 -O postman.tar.gz
	sudo tar -xzf postman.tar.gz -C /opt
	sudo ln -s /opt/Postman/Postman /usr/bin/postman

	#Create a Desktop Entry
	cat > ~/.local/share/applications/postman.desktop <<EOL
	[Desktop Entry]
	Encoding=UTF-8

	// file: index.js

	var _ = require("lodash");
	var express = require("express");
	var bodyParser = require("body-parser");
	var jwt = require('jsonwebtoken');

	var passport = require("passport");
	var passportJWT = require("passport-jwt");

	[Desktop Entry]
	Encoding=UTF-8
	Name=Postman
	Exec=postman
	Icon=/home/USERNAME/Postman/app/resources/app/assets/icon.png
	Terminal=false
	Type=Application
	Categories=Development;

	version: '2'
	services:
	nginx:
	image: nginx:alpine
	restart: always
	labels:
	- "traefik.enable=true"
	- 'traefik.frontend.rule=Host:www.website.com'
	- "traefik.port=80"
	volumes: