From: Magnus Holm <judofyr@...>
Date: 2013-02-19T23:03:00+09:00
Subject: [ruby-core:52527] Re: [ruby-trunk - Feature #7883][Open] Add Regex#to_proc

> class Regexp
>   def to_proc; lambda {|s| self =~ s} end
> end

A more general case:

class Object
  def to_proc
    lambda { |other| self === other }
  end
end

(Not that I think this is going to be accepted���)