prologic

Learn Go in ~5mins

This is inspired by A half-hour to learn Rust and Zig in 30 minutes.

Basics

Your first Go program as a classical "Hello World" is pretty simple:

First we create a workspace for our project:

teivah

package main

import (
	"encoding/json"
	"testing"
)

type foo struct {
	ID            string  `json:"_id"`
	Index         int     `json:"index"`

chetanppatil

For Linux Users

1. Go to directory: /usr/share/dbeaver
2. Edit dbeaver.ini file
3. In that file add -Duser.timezone=UTC this line under -vmargs tag
4. Save it and restart dbeaver.
5. Enjoy with correct date without any date conversion.

Finally your dbeaver.ini file will look like this:

BigZ

<?php

// src/Controller/ExceptionController.php

namespace App\Controller;

use FOS\RestBundle\Util\ExceptionValueMap;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;

voskobovich

1. Open document
2. Crtl + R
3. Checked Regexp
4. Find \$(.+)(\w)_(\w)
5. Replace to \$$1$2\u$3
6. Unchecked Regexp
7. Profit!

milo

<?php

/**
 * GitHub webhook handler template.
 * 
 * @see     https://docs.github.com/webhooks/
 * @author  Miloslav Hůla (https://github.com/milo)
 */

$hookSecret = 's.e.c.r.e.t';  # set NULL to disable check

nikic

Why objects (usually) use less memory than arrays in PHP

This is just a small post in response to [this tweet][tweet] by Julien Pauli (who by the way is the release manager for PHP 5.5). In the tweet he claims that objects use more memory than arrays in PHP. Even though it can be like that, it's not true in most cases. (Note: This only applies to PHP 5.4 or newer.)

The reason why it's easy to assume that objects are larger than arrays is because objects can be seen as an array of properties and a bit of additional information (like the class it belongs to). And as array + additional info > array it obviously follows that objects are larger. The thing is that in most cases PHP can optimize the array part of it away. So how does that work?

The key here is that objects usually have a predefined set of keys, whereas arrays don't:

nikcub

In August 2007 a hacker found a way to expose the PHP source code on facebook.com. He retrieved two files and then emailed them to me, and I wrote about the issue:

http://techcrunch.com/2007/08/11/facebook-source-code-leaked/

It became a big deal:

http://www.techmeme.com/070812/p1#a070812p1

The two files are index.php (the homepage) and search.php (the search page)