From: James Edward Gray II <james@...>
Date: 2006-07-09T23:32:30+09:00
Subject: Re: Question about magic enumerators in > 1.8

On Jul 9, 2006, at 9:03 AM, dblack@wobblini.net wrote:

> Hi --
>
> Can someone jog my memory, and/or enlighten me, as to what a case
> would be where it's useful to have:
>
>   array.map
>
> return an Enumerator?  I can't seem to come up with an example where:
>
>   array.map.anything
>
> is different from
>
>   array.anything
>
> Thanks --

Well, you can use it to roll the oft-requested map_with_index():

   array.each_with_index.map { |obj, i| .. }

That's not a map() example though, so maybe not what you wanted.

James Edward Gray II