Hector E. Gomez Morales hectoregm

Regular Expressions: The Good Parts (Ruby Edition)

Introduction

So what are regular expressions?, Wikipedia has a nice [definition][1]:

Regular expressions provides a concise and flexible means for "matching" (specifying and recognizing) strings of text, such as particular characters, words, or patterns of characters. Abbreviations for "regular expression" include "regex" and "regexp".

How to Ruby Debug with Pow

Below are steps I followed to get ruby debugger ruby-debug running with Pow. Based on info from this thread basecamp/pow#43 and this blog post http://flochip.com/2011/04/13/running-pow-with-rdebug/

1) Update your Gemfile

Assuming you're writing your app in Ruby 1.9 and using Bundler, just add the dependency to your development gems:

Client-side SSL

For excessively paranoid client authentication.

Using self-signed certificate.

Create a Certificate Authority root (which represents this server)

Organization & Common Name: Some human identifier for this server CA.

openssl genrsa -des3 -out ca.key 4096
openssl req -new -x509 -days 365 -key ca.key -out ca.crt

	#
	#
	# * Args :
	# - ++ ->
	# * Returns :
	# -
	# * Raises :
	# - ++ ->
	#
	def method_name

	Escape Sequence Name Meaning
	\a Alert Produces an audible or visible alert.
	\b Backspace Moves the cursor back one position (non-destructive).
	\f Form Feed Moves the cursor to the first position of the next page.
	\n New Line Moves the cursor to the first position of the next line.
	\r Carriage Return Moves the cursor to the first position of the current line.
	\t Horizontal Tab Moves the cursor to the next horizontal tabular position.
	\v Vertical Tab Moves the cursor to the next vertical tabular position.
	\' Produces a single quote.
	\" Produces a double quote.

	MyView = Backbone.View.extend({

	events: {
	"click #someButton": "doThat",
	"change #someInput": "changeIt"
	},

	doThat: function(){ ... },
	changeIt: function(){ ... }
	});

	- http://www.coffeepowered.net/2009/06/13/fine-tuning-your-garbage-collector/
	- http://snaprails.tumblr.com/post/241746095/rubys-gc-configuration

	article’s settings: ("spec spec" took 17-23!sec)
	export RUBY_HEAP_MIN_SLOTS=1250000
	export RUBY_HEAP_SLOTS_INCREMENT=100000
	export RUBY_HEAP_SLOTS_GROWTH_FACTOR=1
	export RUBY_GC_MALLOC_LIMIT=30000000
	export RUBY_HEAP_FREE_MIN=12500

	user nginx;
	worker_processes 5;

	error_log /var/log/nginx.error.log;
	pid /var/run/nginx.pid;

	events {
	worker_connections 1024;
	}

	require File.expand_path(File.join(File.dirname(__FILE__), 'filename'))

	# Or only for ruby 1.9

	require_relative 'filename'