Contents

# encoding: utf-8
require 'open_classes/object'
require 'open_classes/module'
require 'open_classes/array/together_helper'

# Array
class Array
  include TogetherHelper

  # Arrays bulk shift.
  #
  # together_shift has alias :tshift
  #
  # not empty case
  #   lists = [[1, 2], [5, 6]]
  #   ret = lists.together_shift
  #   print ret # => [1, 5]
  #   print lists # => [2, 6]
  #
  # empty case
  #   lists = [[], []]
  #   ret = lists.together_shift
  #   print ret # => [nil, nil]
  #   print lists # => [[], []]
  #
  # not empty case with args
  #   lists = [[1, 2], [5, 6]]
  #   ret = lists.together_shift 2
  #   print ret # => [[1, 2], [5, 6]]
  #   print lists # => [[], []]
  #
  # not empty case with args
  #   lists = [[], []]
  #   ret = lists.together_shift 2
  #   print ret # => [[], []]
  #   print lists # => [[], []]
  def together_shift(count = nil)
    if_not_contain_array_rails_type_error
    if count.nil?
      reduce([]) { |ret, list|ret << list.shift }
    else
      reduce([]) { |ret, list|ret << list.shift(count) }
    end
  end

  alias_method :tshift, :together_shift
end

Version data entries

115 entries across 115 versions & 1 rubygems

Version	Path
tbpgr_utils-0.0.51	lib/open_classes/array/together_shift.rb
tbpgr_utils-0.0.50	lib/open_classes/array/together_shift.rb
tbpgr_utils-0.0.49	lib/open_classes/array/together_shift.rb
tbpgr_utils-0.0.48	lib/open_classes/array/together_shift.rb
tbpgr_utils-0.0.47	lib/open_classes/array/together_shift.rb
tbpgr_utils-0.0.46	lib/open_classes/array/together_shift.rb
tbpgr_utils-0.0.45	lib/open_classes/array/together_shift.rb
tbpgr_utils-0.0.44	lib/open_classes/array/together_shift.rb
tbpgr_utils-0.0.43	lib/open_classes/array/together_shift.rb
tbpgr_utils-0.0.42	lib/open_classes/array/together_shift.rb
tbpgr_utils-0.0.41	lib/open_classes/array/together_shift.rb
tbpgr_utils-0.0.40	lib/open_classes/array/together_shift.rb
tbpgr_utils-0.0.39	lib/open_classes/array/together_shift.rb
tbpgr_utils-0.0.38	lib/open_classes/array/together_shift.rb
tbpgr_utils-0.0.37	lib/open_classes/array/together_shift.rb