概要
自身を再帰的に平滑化した配列を生成
サンプルコード
# encoding: utf-8 require "pp" def println(ary) print "#{ary}\n" end ary1 = [1,2,3] ary2 = [ary1,2,3] ary3 = [ary1,ary2,2,3] println ary3.flatten println ary3.flatten 0 println ary3.flatten 1 println ary3.flatten 2
出力
[1, 2, 3, 1, 2, 3, 2, 3, 2, 3] [[1, 2, 3], [[1, 2, 3], 2, 3], 2, 3] [1, 2, 3, [1, 2, 3], 2, 3, 2, 3] [1, 2, 3, 1, 2, 3, 2, 3, 2, 3]