From: Rick DeNatale <rick.denatale@...>
Date: 2009-12-11T00:26:02+09:00
Subject: [ruby-core:27129] Re: #to_enum ignores block?

On Thu, Dec 10, 2009 at 9:58 AM, Roger Pack <rogerdpack@gmail.com> wrote:
>> The whole purpose of to_enum is to return an Enumerator instance.
>> The block has no meaning and is ignored, it's what the docs and source say.
>> What did you expect it to do?
>
> I would expect it to act like a filter.
>>> (1..3).to_enum {|n| n*2}.to_a
> => [1, 4, 9]

Why not just

ruby-1.9.1-p376 > (1..3).map {|n| n* 2}.to_a
 => [2, 4, 6]

or even

ruby-1.9.1-p376 > (1..3).map {|n| n* 2}
 => [2, 4, 6]

or if you REALLY wanted those results:

ruby-1.9.1-p376 > (1..3).map {|n| n**2}
 => [1, 4, 9]



-- 
Rick DeNatale

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