Tag: Ruby/制御構造
a = ['a', 'b', 'c'] a.size.times do |i| puts i end => 0, 1, 2
a = ['a', 'b', 'c'] 0.upto(a.size - 1) do |i| puts i end => 0, 1, 2
a = ['a', 'b', 'c'] (0...a.size).each do |i| puts i end => 0, 1, 2