winarcooo

<?php

public function cacheOrDatabase(string $cacheKey, callable $callable)
{
    if ($this->cache->has($cacheKey)) {
        return $this->cache->get($cacheKey);
    }
    $fromDatabase = $callable();

    if ($dataFromDatabase === null || empty($dataFromDatabase)) {

winarcooo

<?php

// check from cache, if not exist get using closure, 
// then save to cache
$value = Cache::remember('users', $seconds, function () {
    return DB::table('users')->get();
});

// wrap closure using transaction from DB facade
use Illuminate\Support\Facades\DB;

winarcooo

System Design Cheatsheet

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

Basic Steps

1. 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?

winarcooo

<?php

require_once 'Container.php';

class UserController
{
	public $repository;

	public function __construct(Repository $repository)
	{

winarcooo

FWIW: I'm not the author of the content presented here (which is an outline from Edmond Lau's book). I've just copy-pasted it from somewhere over the Internet, but I cannot remember what exactly the original source is. I was also not able to find the author's name, so I cannot give him/her the proper credits.

---

Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

winarcooo

Cherry pick multiple commits from a remote or upstream branch into your local branch.

Saw this from a comment on an answer on Stack Overflow

git fetch upstream
git cherry-pick A^..B

winarcooo

// delete branch locally
git branch -d localBranchName

// delete branch remotely
git push origin --delete remoteBranchName

winarcooo

Reference

1. https://speakerdeck.com/willroth/50-laravel-tricks-in-50-minutes
2. https://www.reddit.com/r/laravel/comments/3to60i/50_laravel_tricks/

ToC

A. Eloquent

• 1. Automatic Model Validation

winarcooo

sudo update-alternatives --config php

https://vitux.com/how-to-install-php5-and-php7-on-ubuntu-18-04-lts/

winarcooo

'''
Task description
An array A consisting of N different integers is given. The array contains integers in the range [1..(N + 1)], which means that exactly one element is missing.

Your goal is to find that missing element.

Write a function:

def solution(A)