From: Robert Dober <robert.dober@...>
Date: 2008-01-19T22:24:35+09:00
Subject: Re: passing method references in python & ruby

On Jan 19, 2008 1:59 PM, ts <decoux@moulon.inra.fr> wrote:
> >>>>> "R" == Robert Dober <robert.dober@gmail.com> writes:
>
> R> I still fail to see the need for this restriction
>
>  Without this restriction you can write
>
>    Array.instance_method(:[]).bind(Hash.new).call(0)
>
>  and if you are not lucky ruby just crash.
Bad example of mine, what disturbs me is the following

not working:
Module::new{ def a; 42 end}.instance_method(:a).bind(Object.new).call

not working:
a=Modul::new{ def a; 42 end}.i_m :a
Object.module_eval{ define_method :x, a }

working;
module M
  def m; 42 end
end

Object.module_eval{
    include M
    define_method :x, M.instance_method(:m)
}
p Object.new.x

and I thought we were all ducktypers :(

Robert
>
>
> Guy Decoux
>
>



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