May aprilandjan

Travel Guide to OpenGL

I've figured out several things while trying to extend my knowledge of Computer Graphics.

OpenGL can be a bitch if you don't know what you're doing.
There is no worse pain than to experience CMake without knowing what you're doing.
When walking to the depths of hell, it would be nice to have a travel guide.

And that's what this is, a travel guide.

Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:

const Article = require('../../../../app/models/article');

Those suck for maintenance and they're ugly.

Possible solutions

Multiple SSH Keys settings for different github account

create different public key

create different ssh key according the article Mac Set-Up Git

$ ssh-keygen -t rsa -C "[email protected]"

MySQL

Getting started:

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

	import customModuleLoader = require('module');

	export class CustomModuleLoader {
	public cOptions: any = require('../tsconfig.json').compilerOptions;

	public replacePaths: any = {};

	constructor() {
	Object.keys(this.cOptions.paths).forEach(alias => {
	this.replacePaths[alias.replace(/\.?/, '(.)')] = this.cOptions.paths[alias][0].replace(/\*.?/, '$1');

	// takes a {} object and returns a FormData object
	var objectToFormData = function(obj, form, namespace) {

	var fd = form \|\| new FormData();
	var formKey;

	for(var property in obj) {
	if(obj.hasOwnProperty(property)) {

	if(namespace) {

	function slugify(text)
	{
	return text.toString().trim().toLowerCase()
	.replace(/\s+/g, '-') // Replace spaces with -
	// .replace(/[^\w\-]+/g, '') // Remove all non-word chars
	.replace(/[^a-zA-Z0-9_\u3400-\u9FBF\s-]/g,'') // remove all non-word & non-chinese chars
	.replace(/\-\-+/g, '-') // Replace multiple - with single -
	}

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
	<title>Auto play html audio in iOS WeChat InAppBrowser the right way</title>
	</head>
	<body>
	<h1>在 iOS 微信浏览器中自动播放 HTML5 audio(音乐) 的正确方式</h1>
	<p>核心原理: 在微信的JS-API 中 play 一下 audio 即可达到自动播放的目的(应该是微信自己做了处理)</p>

	// --- Compiling ---
	$ wget http://download.redis.io/releases/redis-2.8.3.tar.gz
	$ tar xzvf redis-2.8.3.tar.gz
	$ cd redis-2.8.3
	$ make
	$ make install

	// --- or using yum ---
	$ rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
	$ rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm