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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.

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# CBI Scraper (Offline)
# It scraps comic book issues from the website - comicsbackissues.com - and print them to a single text file

require 'oga'
require 'pry'

FILENAME = "cbi_batman.html"

class ComicBook
  attr_accessor :year, :title, :issue_no, :writer, :penciller, :storyline

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Empty file

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Justice League: Origins (5 years ago)

Batman and Robin #1

Swamp Thing #1

Batgirl #1-6 Batman and Robin #2-8 Catwoman #1-3

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def gcd(n, m)
  if (n > m) && (n * m > 0)
    r = n % m

    if r == 0
      return m
    else
      return gcd(m, r)
    end
  end

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def increment_string(input)
  #your code here
  s = input
  s_digits = input.slice!(/\d+/)
  s_digits_length = s_digits.length
end

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#!/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

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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.

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// 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");