From: Simon Krahnke <overlord@...>
Date: 2008-05-26T16:34:36+09:00
Subject: Re: A simple newbie question (arrays and strings)

* koichirose <koi@ff.it> (22:51) schrieb:

> yermej wrote:
>> unique_array = Dir.entries('.')[2..-1].map {|f| f.split('-')[0]}.uniq
>> string.map! {|f| f.split('-')[0]}.uniq!
>
> What if I do:
> Dir.entries('.')[2..-1].map! {|f| f.split('-')[0]}.uniq
>
> with map! instead of map ?

map! changes the array it's called on. since that is a temporary array
returned by Dir.entries[2..-1] which is discarded after map! that won't
work.

mfg,                  simon .... l