From: Christoph <chr_mail@...>
Date: 2004-11-06T20:41:45+09:00
Subject: Re: require 'enumerator'

Yukihiro Matsumoto schrieb:

>Here's the explanation:
>
>enum_cons() gathers values generated by each_cons().  each_cons()
>passes same array modifying for each time.  Thus all elements in the
>to_a array refers to the same array, thus it seems that all elements
>are [9,10].
>
>I'm not sure yet how it should behave.  Perhaps it should copy
>returning arrays somewhere.
>  
>
Actually I would be surprised by anything but the current efficient 
behavior,
and very much prefer not change this to coping behavior. If need for the
latter arises I can always do it myself.  e.g.

(1..10).enum_cons(2).collect{|x| x.clone }

/Christoph