From: Gregory Brown <gregory.t.brown@...>
Date: 2009-05-14T11:52:29+09:00
Subject: Re: [bikeshed] Syntactic sugar idea

On Wed, May 13, 2009 at 10:42 PM, Daniel DeLorme <dan-ml@dan42.com> wrote:
> It seems that often an object will be passed into a block only to invoke
> a method of that object:
>  arr.map{ |obj| obj.some_method }
>
> So I had the (weird? stupid?) thought that it would be nice to have some
> syntactic sugar like this:
>  arr.map{ .some_method }
>
> Does that make any sense?

>> RUBY_VERSION
=> "1.9.1"
>> %w[foo bar baz].map(&:upcase)
=> ["FOO", "BAR", "BAZ"]

On Ruby 1.8.6, you can implement this easily as:

class Symbol
  def to_proc
    lambda { |x| x.send(self)
  end
end

-greg

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