From: Gavin Sinclair <gsinclair@...>
Date: 2003-10-05T09:35:52+09:00
Subject: Re: [ANN] Ruby/Extensions 0.2.0

On Sunday, October 5, 2003, 2:41:25 AM, Florian wrote:

> Gavin Sinclair wrote:
>> Hi -talk,

> Moin!

>> I have released Ruby (Standard Class) Extensions version 0.2.0.

> Could you include this in the next release? :)

> class Symbol
>    def to_proc
>      proc { |obj, *args| obj.send(self, *args) }
>    end
> end

> It allows you do the following:

> (1..10).inject(&:*)                     # => 3628800
> %w{foo bar qux}.map(&:reverse)          # => %w{oof rab xuq}
> [1, 2, nil, 3, nil].reject(&:nil?)      # => [1, 2, 3]
> %w{ruby and world}.sort_by(&:reverse)   # => %w{world and ruby}


That's quite nice.  Are there any nasty side-effects?  I suppose not,
since you must inform Ruby that you intend to use a symbol in place of
a proc with the '&'.  I'll chuck it in now, but it won't see a release
for a while.

Thanks,
Gavin