George Wyatt geowy

geowy / array_to_proc.rb

Last active September 16, 2015 12:19

Array#to_proc, shorthand for creating a block that selects elements of an array/hash/collection.

	class Array

	# Returns a proc which calls [] with the array's contents as arguments
	#
	# ====Usage
	# [[1, 2], [3, 4], [5, 6]].map(&[0])
	# # => [1, 3, 5]
	#
	# [{ hello: 'world' }, { hello: 'sun', goodbye: 'moon' }].map(&[:hello])
	# # => ['world', 'sun']

geowy / Rspec_subject_behaviour_question.rb

Last active February 10, 2016 03:20 — forked from damonjmurray/Rspec_subject_behaviour_question.rb

RSpec subject behaviour question

	require 'spec_helper'

	class Foo
	def self.bar(first, second, third)
	err_msg = '%s cannot be nil'
	raise ArgumentError, err_msg % 'first' unless first
	raise ArgumentError, err_msg % 'second' unless second
	raise ArgumentError, err_msg % 'third' unless third

	"#{first} #{second} #{third}"

geowy / game_of_life.rb

Created June 3, 2020 01:38

	require 'matrix'

	NEIGHBOUR_RELATIVE_COORDS =
	[[-1, -1], [-1, 0], [-1, 1],
	[ 0, -1], [ 0, 1],
	[ 1, -1], [ 1, 0], [ 1, 1]]

	# Init matrix
	# true = alive, false = dead
	matrix = Matrix.build(35, 45) { [true, false].sample }

geowy / game.rb

Created July 20, 2020 14:36

Tic Tac Toe in Ruby