From: Lou Vanek <vanek@...>
Date: 2005-12-09T21:19:58+09:00
Subject: Re: How to pass numeric variables by reference?

probably assign on callback. In other words, Ruby doesn't have
a direct pass-by-reference operation for numbers,
but you can easily achieve the same result.

using irb:

  10 :> def foo(c,d)
return c+1, d+2
end
     ==> nil
  13 :> a,b = 5,6
     ==> [5, 6]
  14 :> puts a,b
5
6
     ==> nil
  15 :> a,b = foo(a,b)
     ==> [6, 8]
  16 :> puts a,b
6
8



Eric Christensen wrote:

> What's the Ruby way of achieving pass-by-reference for numbers, as in 
> the C code
> 
> void foo (int* x)
> {
> 
> }