Tyrael Tong tyraeltong

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Tutorials

A Common .ruby-version File For Ruby Projects

Background

I've been using this technique in most of my Ruby projects lately where Ruby versions are required:

Create .rbenv-version containing the target Ruby using a definition name defined in ruby-build (example below). These strings are a proper subset of RVM Ruby string names so far...
Create .rvmrc (with rvm --create --rvmrc "1.9.3@myapp") and edit the environment_id= line to fetch the Ruby version from .rbenv-version (example below).

Today I learned about another Ruby manager, rbfu, where the author is using a similar technique with .rbfu-version.

Setting up Emacs daemon on OS X

Tired of waiting for emacs to start on OS X? This step by step guide will teach you how to install the latest version of emacs and configure it to start in the background (daemon mode) and use emacsclient as your main editor.

Install Homebrew

First you'll need to install the [Homebrew package manager][brew] if yo haven't already. It is amazing.

	int save_frame_as_jpeg(AVCodecContext pCodecCtx, AVFrame pFrame, int FrameNo) {
	AVCodec *jpegCodec = avcodec_find_encoder(AV_CODEC_ID_JPEG2000);
	if (!jpegCodec) {
	return -1;
	}
	AVCodecContext *jpegContext = avcodec_alloc_context3(jpegCodec);
	if (!jpegContext) {
	return -1;
	}

	#!/usr/bin/env bash

	# Pre-requisites
	sudo apt-get -y update
	sudo apt-get --no-install-recommends -y install build-essential openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev libgdbm-dev ncurses-dev automake libtool bison subversion pkg-config libffi-dev vim

	# Download and compile Ruby 2.1.3
	cd /tmp
	wget ftp://ftp.ruby-lang.org/pub/ruby/2.1/ruby-2.1.3.tar.gz
	tar -xvzf ruby-2.1.3.tar.gz

	# Install Git needed for Git based gems
	packages:
	yum:
	git: []

	def write(text="")
	puts text
	end

	def say(message, subitem=false)
	write "#{subitem ? " ->" : "--"} #{message}"
	end

	def say_custom(tag, text)
	say "\033[1m\033[36m" + tag.to_s.rjust(10) + "\033[0m" + " #{text}"

	server{
	listen 80; #or change this to your public IP address eg 1.1.1.1:80
	server_name wordpress; #change this to the domain name, for example www.myblog.com
	access_log /var/log/wordpress.access_log;
	error_log /var/log/wordpress.error_log;

	location / {
	root /home/your-user-name/Sites/wordpress;
	index index.php index.html index.htm;

	mysql -u root -p
	mysql> create user blog@localhost identified by 'password';
	mysql> create database blog;
	mysql> grant all on blog.* to blog@localhost;
	mysql> exit;