geowy

class Game
  WINNING_PATTERNS = [
    [0, 1, 2],
    [3, 4, 5],
    [6, 7, 8],
    [0, 3, 6],
    [1, 4, 7],
    [2, 5, 8],
    [0, 4, 8],
    [2, 4, 6]

geowy

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

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

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']