From: Yukihiro Matsumoto <matz@...>
Date: 2007-09-06T08:32:23+09:00
Subject: Re: before, after and around Ruby 1.9

Hi,

In message "Re: before, after and around Ruby 1.9"
    on Thu, 6 Sep 2007 03:07:14 +0900, Trans <transfire@gmail.com> writes:

|Any chance Ruby 1.9 will have before, after and around method
|composition support?

No.  Wait for 2.0 for built-in method combination.  The vague plan is
making open-class to stack methods on the current ones, unless
explicitly removed, i.e.

  class Foo < Object
    def foo
      puts "Foo#foo (1)"
    end
  end
  class Foo # re-open
    def foo
      super  # calls the first foo
      puts "Foo#foo (2)"
    end
  end

will print

      Foo#foo (1)
      Foo#foo (2)

No alias required.

This works as "around".  And "before" and "after" can be rewritten
using "around".  Note that this is not a fixed idea at all.

							matz.