08/03/10 07:00:14
>>291
要素数が同じでいいなら普通はmap!やcollect!を使う
irb> arr = [1,2,3]
irb> arr.map!{|e| e*2}
irb> p arr
[2, 4, 6]
08/03/10 07:00:14
>>291
要素数が同じでいいなら普通はmap!やcollect!を使う
irb> arr = [1,2,3]
irb> arr.map!{|e| e*2}
irb> p arr
[2, 4, 6]
08/03/10 07:00:14
>>291
要素数が同じでいいなら普通はmap!やcollect!を使う
irb> arr = [1,2,3]
irb> arr.map!{|e| e*2}
irb> p arr
[2, 4, 6]