David Löwenfels dfl

Add default parameter values for function definitions

This PR adds support for default parameter values in function definitions, reducing boilerplate and improving API ergonomics:

// Define with defaults
lowpass(freq, q=0.707) = fi.resonlp(freq, q, 1);

	#!/bin/bash
	filetype=$(file -b --mime-type "$1")

	if [[ "$(uname)" == "Darwin" ]]; then # MacOS
	# Check if ImageMagick is installed
	if ! command -v identify >/dev/null 2>&1; then
	echo "ImageMagick is not installed. Installing..."
	brew install imagemagick
	fi

	# test helpers for integration testing written by David Lowenfels
	# place in lib/internaut/shoulda_extensions.rb
	require "rails-dom-testing" # for css_select method

	## Example usage

	module Internaut
	module ShouldaExtensions
	extend ActiveSupport::Concern

	# This script requires the nokogiri gem, and youtube-dl to be installed.
	# It will fetch video, mp3, and text results.
	# download cookies.txt using Chrome plugin "Get cookies.txt"
	# download page source as course-page.html

	quality = "iphone-360p" # to find quality options, use youtube-dl -v -F --cookies cookies.txt https://{KAJABI_COURSE}/categories/#####/posts/#####
	cookies = "=cookies.txt"
	course_url = "https://www.MYCOURSE.COM"
	domain = course_url.split("/")[2]

	require 'yaml'
	require 'fileutils'

	namespace :db do

	desc "create the db/backup directory if it doesn't exist"
	task :create_backup_dir do
	FileUtils.mkdir_p backup_dir
	end

	# mysql db backup and restore for rails
	# by David Lowenfels <david@internautdesign.com> 4/2011

	require 'yaml'

	namespace :db do
	def backup_prep
	@directory = File.join(RAILS_ROOT, 'db', 'backup')
	@db = YAML::load( File.open( File.join(RAILS_ROOT, 'config', 'database.yml') ) )[ RAILS_ENV ]
	@db_params = "-u #{@db['username']} #{@db['database']}"

	require 'digest/sha1'

	module FactoriesAndWorkers

	module Factory
	def self.included( base )

	def factory( kind, default_attrs, opts={}, &block )
	FactoryBuilder.new( kind, default_attrs, opts, self, &block )
	end

	module Internaut
	module ActiveRecord
	module CallbackExtensions

	def self.included(base) #:nodoc:
	base.extend ClassMethods
	base.class_eval do
	class_inheritable_accessor :disabled_callbacks
	self.disabled_callbacks = [] # set default to empty array
	end

	# example unit test context using should_change and should_not_change

	context "Given a user" do
	setup do
	@user = create_user
	end

	context "when sent initials with a hyphen and lower case" do
	setup do
	@user.update_attributes!( :first_name => "Jason", :last_name => "happy-Klein" )