vysogot

def cartprod(*args)
  result = [[]]
  while [] != args
    t, result = result, []
    b, *args = args
    t.each do |a|
      b.each do |n|
        result << a + [n]
      end
    end

vysogot

def permute(*args)

  # filter the arguments
  args.reject! {|x| !x.is_a?(Array) || x.empty?}

  # get the number of all combinations
  total = args.inject(1) {|total, array| total * array.size}

  # prepare the small_cycles array to know how many times
  # one element should be repeated in a loop

vysogot

require File.expand_path(File.dirname(__FILE__) + "/../test_helper")
include Test::Unit::UserStory

story "Create the thing",  %{
  As a user
  I want to create something
  In order to show something
} do

 criteria "without js when logged in" do

vysogot

module Test::Unit::UserStory
  class UserStoryTestCase < ActionController::IntegrationTest
    class << self
      attr_accessor :description

      alias :it :test

      def criteria(name, options = {}, &block)
        klass = create_class(name, self, &block)
        helper_klass = options[:js] ? CapybaraJavascriptTestHelper : CapybaraTestHelper

vysogot

bar.receive_order(client.put_words_in_mouth('Un croissant, por favor.').speak_up)

vysogot

:- lib(ic).
croissant(X,Y,Z) :-
   (X^2+Y^2+Z^2+7*sqrt(5)/2-11/2)^2 - ((1+sqrt(5))*X-7+3*sqrt(5))^2-(1+sqrt(5))^2*Y^2 $= 0,
   locate([X,Y,Z], 1e-5).

# one of the solutions
croissant(X,Y,Z).

X = X{0.0 .. 7.4073630564431975e-6}
Y = Y{1.066573563196598 .. 1.0665754743970506}

vysogot

def permute(*args)

  # initialize the register for each array
  # with [array itself, offset, its size]
  memory = []
  perm_count = 1
  args.each do |array|
    size = array.size
    memory << [array, 0, size-1]