200226

Crystal


深さが不定の配列の作成

Ruby と違い型の設定が要る。

alias Ary = Int32 | String | Array(Ary)

a = Array(Ary).new
5.times{|i|
  a << i
  a << i.to_s
  p a
  b = Array(Ary).new
  b << a
  a = b
}

出力結果
[0, "0"]
[[0, "0"], 1, "1"]
[[[0, "0"], 1, "1"], 2, "2"]
[[[[0, "0"], 1, "1"], 2, "2"], 3, "3"]
[[[[[0, "0"], 1, "1"], 2, "2"], 3, "3"], 4, "4"]