From: nobu.nokada@...
Date: 2005-07-13T01:46:17+09:00
Subject: Re: accessing index inside map

Hi,

At Wed, 13 Jul 2005 01:10:19 +0900,
Brian Candler wrote in [ruby-talk:147876]:
> However, perhaps 'to_enum' could be called something friendlier, e.g.
> 
>   obj.using(:each_with_index).inject(0) {|sum,(a,i)| sum + a*i}

`using' sounds too general.

> In fact, even
> 
>   obj.enum(:each_with_index).inject(0) {|sum,(a,i)| sum + a*i}
> 
> reads better to me, as it's not stressing the creation of an intermediate
> object. to_foo looks like you are converting obj into something completely
> different, rather than just adding a temporary wrapper.

Enumerable#to_enum has an alias named as #enum_for.

-- 
Nobu Nakada