izniburak

MongoDB Cheat Sheet

Show All Databases

show dbs

Show Current Database

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:root {
 --violation-color: red; /* used for clear issues */
 --warning-color: orange; /* used for potential issues we should look into */
}

/* IMAGES */

/*
 * Lazy-Loaded Images Check
 * ====

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<?php

class Container
{
    /**
     * @var array
     */
    protected $instances = [];

    /**

izniburak

import { useState, useLayoutEffect } from 'react'

const useLocalStorage = (key, defaultValue = null, prefix = 'store') => {
  const storeKey = `${prefix}-${key}`

  const [value, setValue] = useState(() => {
    const data = localStorage.getItem(storeKey)
    return data === null ? defaultValue : JSON.parse(data)
  })

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class App extends Component {
 constructor(props) {
  super(props);
  this.state = {
   foo: "",
   bar: "",
  };
 }
 // Reusable for all inputs
 onChange = e => {

izniburak

Below are the Big O performance of common functions of different Java Collections.


List                 | Add  | Remove | Get  | Contains | Next | Data Structure
---------------------|------|--------|------|----------|------|---------------
ArrayList            | O(1) |  O(n)  | O(1) |   O(n)   | O(1) | Array
LinkedList           | O(1) |  O(1)  | O(n) |   O(n)   | O(1) | Linked List
CopyOnWriteArrayList | O(n) |  O(n)  | O(1) |   O(n)   | O(1) | Array

izniburak

module.exports = (string) => {
    return string.replace(/([a-z0-9]|(?=[A-Z]))([A-Z])/g, '$1-$2').toLowerCase();
};

izniburak

Laravel's Dependency Injection Container in Depth

Translations: Korean (by Yongwoo Lee)

Laravel has a powerful Inversion of Control (IoC) / Dependency Injection (DI) Container. Unfortunately the official documentation doesn't cover all of the available functionality, so I decided to experiment with it and document it for myself. The following is based on Laravel 5.4.26 - other versions may vary.

Introduction to Dependency Injection

I won't attempt to explain the principles behind DI / IoC here - if you're not familiar with them you might want to read What is Dependency Injection? by Fabien Potencier (creator of the Symfony framework).

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require 'rubyXL'
require 'terminal-table'

person = 2
extra = true

file_ruby = RubyXL::Parser.parse 'liste-ruby.xlsx'
file_go = RubyXL::Parser.parse 'liste-go.xlsx'
list_ruby = file_ruby.first.to_a.shuffle
list_go = file_go.first.to_a.shuffle