Marcio Horoiwa mmassaki

A Primer on Ruby Method Lookup

Method lookup is a simple affair in most languages without multiple inheritance. You start from the receiver and move up the ancestors chain until you locate the method. Because Ruby allows you to mix in modules and extend singleton classes at runtime, this is an entirely different affair.

I will not build contrived code to exemplify the more complicated aspects of Ruby method lookup, as this will only serve to confuse the matter.

When you pass a message to an object, here is how Ruby finds what method to call:

1. Look within singleton class

This list is based on aliases_spec.rb.

You can see also Module: RSpec::Matchers API.

matcher	aliased to	description
a_truthy_value	be_truthy	a truthy value
a_falsey_value	be_falsey	a falsey value
be_falsy	be_falsey	be falsy
a_falsy_value	be_falsey	a falsy value

System Preferences -> Security -> Allow apps to be installed from anywhere
iTerm2
remember to install update when prompted
after update, enable toolbet with paste history and jobs (sweet!)
Jumpcut
xcode - from App Store
open xcode to install xcode components
install command line tools
homebrew
update brew: $ brew update

	# Part of a post here: https://medium.com/@josh.cheek/c45dac057a1a

	ruby -e 'loop { p eval gets }'

	ruby -e '
	bnd = binding() # gets a new binding
	loop { p bnd.eval gets } # eval within the same binding each time
	'

	ruby -r readline -e '

	ZSH_THEME_GIT_PROMPT_PREFIX=" %{$fg[cyan]%}"
	ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%}"
	ZSH_THEME_GIT_PROMPT_DIRTY="%{$fg[red]%}✘"
	ZSH_THEME_GIT_PROMPT_CLEAN="%{$fg[green]%}✔"
	ZSH_THEME_GIT_PROMPT_AHEAD="%{$fg[red]%}➦"

	# ZSH_THEME_GIT_PROMPT_ADDED="%{$fg[cyan]%} ✈"
	# ZSH_THEME_GIT_PROMPT_MODIFIED="%{$fg[yellow]%} ✭"
	# ZSH_THEME_GIT_PROMPT_DELETED="%{$fg[red]%} ✗"
	# ZSH_THEME_GIT_PROMPT_RENAMED="%{$fg[blue]%} ➦"

	require 'net/http'
	require 'json'
	require 'uri'

	@token = ''

	def list_files
	ts_to = (Time.now - 30 * 24 * 60 * 60).to_i # 30 days ago
	params = {
	token: @token,

	# chmod +x OSX-setup.sh

	if ! type "git" > /dev/null; then
	echo "Installing git"

	brew install git
	fi

	if [ -d "~/.oh-my-zsh" ]; then
	# Installing oh my zsh

	NOTE: Easier way is the X86 way, described on https://www.genymotion.com/help/desktop/faq/#google-play-services

	Download the following ZIPs:

	ARM Translation Installer v1.1 (http://www.mirrorcreator.com/files/0ZIO8PME/Genymotion-ARM-Translation_v1.1.zip_links)

	Download the correct GApps for your Android version:
	Google Apps for Android 6.0 (https://www.androidfilehost.com/?fid=24052804347835438 - benzo-gapps-M-20151011-signed-chroma-r3.zip)
	Google Apps for Android 5.1 (https://www.androidfilehost.com/?fid=96042739161891406 - gapps-L-4-21-15.zip)
	Google Apps for Android 5.0 (https://www.androidfilehost.com/?fid=95784891001614559 - gapps-lp-20141109-signed.zip)

	#!/bin/bash

	if [ $# -ne 2 ]; then
	echo "Usage: $0 file partSizeInMb";
	exit 0;
	fi

	file=$1

	if [ ! -f "$file" ]; then

	#!/bin/sh

	# Sets Terminal to case insensitive
	# http://blog.nickburwell.com/blog/2008/11/mac-os-x-terminal-case-insensitive-auto
	echo "set completion-ignore-case On" >> ~/.inputrc
	# Disables the creation of .DS_Store files on external volumes
	# http://danilo.ariadoss.com/how-to-recursively-remove-ds_store-files-on-mac-os-x/
	defaults write com.apple.desktopservices DSDontWriteNetworkStores true
	# Make Your Keyboard Keys Repeat Properly When Held Down
	# http://lifehacker.com/5826055/make-your-keyboard-keys-repeat-properly-when-held-down-in-mac-os-x-lion