From: Roy Patrick Tan <rtan@...>
Date: 2003-08-05T02:36:32+09:00
Subject: clearing a parameter in Ruby?

Hi,

is it possible to write a method that can "clear" a parameter in Ruby? 
That is can a write a method "push" such that for the code below:

    x = "Hello"
    string_stack.push(x)
    puts x

the output will be nil instead of "Hello"?