From: Joe Van Dyk <joevandyk@...>
Date: 2005-08-27T04:05:24+09:00
Subject: Re: ruby quiz question '*' on the initialize parameters

On 8/26/05, Gaston Garcia <gaston.garcia@gmail.com> wrote:
> well, now I got lost with that reverse example. but I did get the first one.
> 
> thanks! : )

% cat a.rb
def foo x, y, z
  puts "x: #{ x }, y: #{ y }, z: #{ z }"
end

my_array = [1, 2, 3]
foo *my_array


% ruby a.rb
x: 1, y: 2, z: 3


> On 8/26/05, James Edward Gray II <james@grayproductions.net> wrote:
> >
> > On Aug 26, 2005, at 1:24 PM, Gaston Garcia wrote:
> >
> > > Thanks james, that's a beautiful thing that does!!!
> >
> > It also works in reverse. Watch this:
> >
> > irb(main):001:0> def var_args( *args )
> > irb(main):002:1> fixed_args(*args) # expanded back out
> > irb(main):003:1> end
> > => nil
> > irb(main):004:0> def fixed_args( one, two, three )
> > irb(main):005:1> p three
> > irb(main):006:1> end
> > => nil
> > irb(main):007:0> var_args 1, 2, 3
> > 3
> > => nil
> >
> > James Edward Gray II
> >
> >
> >
> 
> 
> --
> -gaston
> 
>