From: Mathieu Bouchard <matju@...>
Date: 2001-12-06T14:05:24+09:00
Subject: [ruby-talk:27626] Re: References


On Thu, 6 Dec 2001, Ralph Mason wrote:

> void normalise( var& x, var& y ) { if (x > y ) swap ( x,y); }
> def normalise!( x, y )
>     //here you get instances of var (the one and only variable class)
>     x,y = [y,x].sort
> end

def normalise!(a,b,&context)
  if eval("#{a}",context) > eval("#{b}",context)
    eval "#{a},#{b}=#{b},#{a}", context end end

> x,y = normalise(x,y)

normalise!(:x,:y){}

i agree it's not as cute as in C++ or Perl or Tcl.

________________________________________________________________
Mathieu Bouchard                   http://hostname.2y.net/~matju