vahid-almasi

# removing bash warning in mac
export BASH_SILENCE_DEPRECATION_WARNING=1

# show git branch
function ps1() {
  local spacing=""
  if [ -d .git ]; then
    branch_name=$(git rev-parse --abbrev-ref HEAD)
    [ ${#branch_name} -gt 10 ] && dots="..." || dots=""
    spacing="${branch_name::10}$dots |"

vahid-almasi

# first start your vpn :) or change your DNS

sudo apt update &&
sudo apt upgrade &&
sudo apt install curl wget make git nginx python-pip vim unrar  &&

vahid-almasi

<?php 

class Person {
    public function read(BookInterface $book)
    {
        $book->open();
        $book->turnPage();
    }
}

vahid-almasi

<?php 

class eReaderAdapter implements BookInterface {
    private $reader;
    public function __construct(eReaderInterface $reader)
    {
        $this->reader = $reader;
    }
    public function open()
    {

vahid-almasi

<?php

class Kindle implements eReaderInterface {
    
    public function turnOn()
    {
        var_dump('turn the Kindle on');
    }
    
    public function pressNextButton()

vahid-almasi

<?php

interface eReaderInterface {
  
    public function turnOn();
    public function pressNextButton();
  
}

vahid-almasi

<?php

class Book implements BookInterface {
    public function open()
    {
        var_dump('opening the paper book.');
    }
    public function turnPage()
    {
        var_dump('turning the page of the paper book.');

vahid-almasi

<?php

class CarService
{
    protected $cost = 20;
    protected $description = 'Basic inspection';

    public function getCost()
    {
        return $this->cost;

vahid-almasi

<?php

interface CarService
{
    public function getCost();

    public function getDescription();
}

class BasicInspection implements CarService

vahid-almasi

<?php

interface CarService
{
    public function getCost();
}

class BasicInspection implements CarService
{
    public function getCost()