From: Brian Candler <b.candler@...>
Date: 2009-11-11T05:30:54+09:00
Subject: Re: RCR enumerable extra into core

Rick Denatale wrote:
> On Tue, Nov 10, 2009 at 10:47 AM, Brian Candler <b.candler@pobox.com> 
> wrote:
>> other Enumerators. When you want a real array, then add .to_a to the
>> end.
> 
> And you base this ultimate conclusion on what?

The OP was asking whether map(:foo) should return an Array or an 
Enumerator. I was trying to say that if you're ambivalent about this, 
one logical conclusion (or extreme viewpoint) is that you could always 
return an Enumerator, even for

   map { |x| x*x }

I wasn't saying that Ruby does anything like this, and it's a tangent to 
the original thrust of map(:foo).
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