From: Thomas Hafner <thomas@...>
Date: 2007-01-29T02:15:11+09:00
Subject: retrieving an object by it's id

Hello,

how can I write a method f which fullfills the following
specification?

The function f has one Fixnum argument oi.
f(oi) == [true, obj], if there's an object obj with obj.object_id == oi;
f(oi) == [false, nil], otherwise.

Regards
  Thomas