lib/open_classes/array/together_pop.rb
# encoding: utf-8
require 'open_classes/object'
require 'open_classes/module'
require 'open_classes/array/together_helper'
# Array
class Array
include TogetherHelper
# Arrays bulk pop.
#
# together_pop has alias :tpop
#
# not empty case
# lists = [[1, 2], [5, 6]]
# ret = lists.together_pop
# print ret # => [2, 6]
# print lists # => [1, 5]
#
# empty case
# lists = [[], []]
# ret = lists.together_pop
# print ret # => [nil, nil]
# print lists # => [[], []]
#
# not empty case with args
# lists = [[1, 2], [5, 6]]
# ret = lists.together_pop 2
# print ret # => [[1, 2], [5, 6]]
# print lists # => [[], []]
#
# not empty case with args
# lists = [[], []]
# ret = lists.together_pop 2
# print ret # => [[], []]
# print lists # => [[], []]
def together_pop(count = nil)
if_not_contain_array_rails_type_error
if count.nil?
reduce([]) { |ret, list|ret << list.pop }
else
reduce([]) { |ret, list|ret << list.pop(count) }
end
end
alias_method :tpop, :together_pop
end