From: "Iván Vega Rivera" <ivanvega@...>
Date: 2006-03-08T11:27:41+09:00
Subject: Re: Passing the same argument(s) to several methods at once

That's kind of what I remember reading, and it was indeed on 'the ruby
way'. Unfortunately, no matter how much I read, I still can't get into
my thick head how blocks work... I wish I just could erase my current
knowledge with other languages... it just gets in the way!

So back to burning the midnight oil it is...

Kind regards,
Ivan V.

On 3/7/06, ara.t.howard@noaa.gov <ara.t.howard@noaa.gov> wrote:
> On Wed, 8 Mar 2006, [ISO-8859-1] Iv�n Vega Rivera wrote:
> >
> > On 3/7/06, ara.t.howard@noaa.gov <ara.t.howard@noaa.gov> wrote:
> >>
> >> the general case is:
> >>
> >>   %w( function_a function_b ).each{|m| receiver.send(m, *args, &block)}
> >>
> >> works for any number of args, any receiver, and any block or lack of.
> >>
> >> hth.
> >>
> >> -a
>
> > Thanks but could you explain me a little bit more how that works? Ruby
> > says 'block' is undefined. So I'm missing something.
> >
> > The problem is I don't quite understand how that code works :-)
> >
> > Ivan V.
>
> a method that takes a block will/can have this signature
>
>   def m(*args, &block)
>   end
>
>
> here is the simplest possible example:
>
>     harp:~ > cat a.rb
>     require 'yaml'
>
>     def a x
>       y "a" => {"x" => x}
>     end
>
>     def b x
>       y "b" => {"x" => x}
>     end
>
>     %w( a b ).each{|m| send m, 42}
>
>
>     harp:~ > ruby a.rb
>     ---
>     a:
>       x: 42
>     ---
>     b:
>       x: 42
>
>
> get a copy of 'the ruby way', the 'pickaxe', or google this group to learn
> about blocks.
>
> kind regards.
>
>
> -a
>
> --
> judge your success by what you had to give up in order to get it.
> - h.h. the 14th dali lama
>
>