Wes Bailey wbailey

Carrum Health
San Francisco
http://www.becomingmedium.com

Recently created

Least recently created

Recently updated

Least recently updated

wbailey / gist:890042

Created March 28, 2011 05:32

	module Kata
	module Base
	describe "DSL" do
	before :each do
	@summary = 'sample summary'
	[...]
	end

	describe "#kata" do
	[...]

wbailey / gist:890034

Created March 28, 2011 05:15

	wesbailey@feynman:~/code_katas> kata take sample.rb
	Awesome Exercise Kata

wbailey / gist:890033

Created March 28, 2011 05:11

	kata "Awesome Exercise" do
	[...]
	end

wbailey / bundle.sh

Created March 21, 2011 07:51

Announcing the code kata project

	wesbailey@feynman:~/tmp/code_katas> bundle install
	Using ZenTest (4.4.2)
	...
	Using bundler (1.0.10)
	Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.

wbailey / backreference.rb

Created March 10, 2011 21:08

Using a back reference in the regular expression definition

	ruby-1.9.2-p136 > 'asdf asdf--asdf asdf-asdf'.gsub(/( \|-)( \|-)?/, '_')
	=> "asdf_asdf_asdf_asdf_asdf"

	ruby-1.9.2-p136 > 'asdf asdf--asdf asdf-asdf'.gsub(/( \|-)\1?/, '_')
	=> "asdf_asdf_asdf_asdf_asdf"

wbailey / benchmark.rb

Created March 4, 2011 07:31

Fun with ruby arrays and hashes

	# usage: array_merge.rb --data_file=filename --limits=10,20,30
	require 'rubygems'
	require 'vr_script'
	require 'benchmark'

	include Benchmark

	class Array
	def to_hash_using_inject_push( use_array )
	Hash[*(0 .. self.size).inject( [] ) { \|r,i\| r.push( self[i], use_array[i] ) }]

wbailey / databases.rake

Created February 11, 2011 08:58

ActiveRecord migrations outside of Rails

	require 'yaml'
	require 'logger'
	require 'active_record'

	namespace :db do
	def create_database config
	options = {:charset => 'utf8', :collation => 'utf8_unicode_ci'}

	create_db = lambda do \|config\|
	ActiveRecord::Base.establish_connection config.merge('database' => nil)

wbailey / 00_create_schema_migrations.down.sql

Created February 8, 2011 10:47

For when you want migrations that are just straight sql files. This is useful when creating databases for working with partner data and matching your data to it another database that is for a rails app.

drop table if exists schema_migrations;

wbailey / tourist_irb_session_1.rb

Created January 26, 2011 22:58

An example irb session to learn how a piece of code that is using meta-programming works

	wesbailey@feynman:~/playground> irb -r neverwritecodelikethis
	ruby-1.9.2-p0 > space = Hash.new(0)
	=> {}
	ruby-1.9.2-p0 > ObjectSpace.each_object(self.class) {\|o\| space[o.class] += 1}
	=> 10349
	ruby-1.9.2-p0 > space.keys
	=> [String, RubyToken::TkIDENTIFIER,..., NeverWriteCodeLikeThis, ... , RubyToken::TkNL, RubyToken::TkRBRACE, ArgumentError]
	ruby-1.9.2-p0 >

wbailey / meta_comments.rb

Created January 19, 2011 07:59

Comment your meta-programming to reflect the actual code being executed

	class NeverWriteCodeLikeThis
	@@actions = ["create", "retrieve", "update"]

	def initialize(val)
	@@actions.each do \|m\| # ["create", "retrieve", "update"].each do \|m\|
	instance_variable_set("@#{m}_process".to_sym, val) # instance_variable_set("@create_process".to_sym, val)
	end # end
	end
	end

Newer Older