From: Clifford Heath <no@...>
Date: 2011-04-21T21:36:12+09:00
Subject: Re: Hash Surprises with Fixnum, #hash, and #eql?

On 04/21/11 21:28, Robert Klemme wrote:
> Please keep in mind that in a multithreaded environment there is
> synchronization overhead.  A solution could use an AtomicBoolean

Oh get real. This is a single variable which may, during the course of
a single execution, *once* change from false to true. In so doing, it
enables a slightly more conservative approach to compatibility for one
small side-effect of a shortcut, which probably doesn't even matter to
the application, and which is almost certainly set by the one thread
that cares about that side effect. It *so* doesn't need to be synchronised.