From: Peter Ertl <pertl@...>
Date: 2005-10-27T02:22:44+09:00
Subject: Re: Nuby Array questions - each iterates nested arrays?

a.flatten.each { |x| p x}

:-)

> --- Urspr�ngliche Nachricht ---
> Von: Ed Howland <ed.howland@gmail.com>
> An: ruby-talk@ruby-lang.org (ruby-talk ML)
> Betreff: Nuby Array questions - each iterates nested arrays?
> Datum: Thu, 27 Oct 2005 02:16:39 +0900
> 
> a=[[1, 2, 3], [4, 5, 6]]
> => [[1, 2, 3], [4, 5, 6]]
> a.length
> => 2
> a.each {|x| puts x}
> 1
> 2
> 3
> 4
> 5
> 6
> => [[1, 2, 3], [4, 5, 6]]
> a.each_index {|x| puts x}
> 0
> 1
> 
> Why does each traverse into the inner arrays as well (tried it with 3
> and 4 deep?)
> Array#length seems to be correct to me and Array#each_index
> This seems to happen to collect!, and I'd gather other methods as well.
> 
> Convenient, if you want depth first traversal on all arrays. but what
> if you just want to iterate in a shallow manner?
> 
> Thanks
> Ed
>