From: ara.t.howard@...
Date: 2006-03-08T11:02:49+09:00
Subject: Re: Passing the same argument(s) to several methods at once

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