From: rubikitch <rubikitch@...>
Date: 2005-12-09T13:41:04+09:00
Subject: Re: How to pass numeric variables by reference?

From: Eric Christensen <ericrchr@gmail.com>
Subject: How to pass numeric variables by reference?
Date: Fri, 9 Dec 2005 13:23:36 +0900

> What's the Ruby way of achieving pass-by-reference for numbers, as in 
> the C code

Array can do it.

def f(a)
  a[0] = 10
end

a = [1]
f(a)
a[0] == 10 or raise
puts "ok"

--
rubikitch