From: Gregory Brown <gregory.t.brown@...>
Date: 2007-01-17T05:36:01+09:00
Subject: Re: Can anyone try to solve this problems?

On 1/16/07, Sam Smoot <ssmoot@gmail.com> wrote:
> Here's my try at a Ruby 1.8 implementation of the Enumerable#max_by:
>
> > a = %w{ one two three four }
>
> > def a.max_by
> >   pairs = inject({}) do |hash, obj|
> >     hash[yield obj] = obj; hash
> >   end
> >   pairs[pairs.keys.max]
> > end

Yep, this is smarter than my ruby attempt :)

Avoid the dependency on facets, Symbol#to_proc is the easiest thing in
the world to write

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