[ruby-list:47249] Re: for文について

From: Kiyotaka ATSUMI <kiyotaka@...>
Date: 2010-07-21 14:59:42 UTC
List: ruby-list #47249
渥美です.

OZAWA Sakuro <sakuro@2238club.org> wrote (Wed, 21 Jul 2010 23:47:02 +0900)

> for i in 10.downto(1) do puts i end

なるほど.inの後はRangeである必要はない訳だからdownto, upto, そして

Tomohiro Nishimura <tomohiro68@gmail.com> wrote (Wed, 21 Jul 2010 22:14:24 +0900)

> 他にも、
> 
> 10.step(1, -1) {|i| p i }

も使えば+/-/小数点と自在ですね.勉強になります.

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Kiyotaka ATSUMI, Suzuka National College of Technology
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