From: Robert Klemme <bob.news@...>
Date: 2005-01-18T01:11:10+09:00
Subject: Re: is defined? fast?


"George Moschovitis" <george.moschovitis@gmail.com> schrieb im Newsbeitrag
news:1105968115.995603.227690@f14g2000cwb.googlegroups.com...
> Hello everyone, I have a simple question:
>
> is 'if defined?(MyFlag)' as fast as 'if $my_flag'
> or is it much slower?
>
> Any information will be appreciated.

You cannot compare them as both have different functionality: defined?
checks whether a var is defined while the other test uses the var value.

I think there is a wiki page about this but I cannot find it at the
moment. The wiki is here:
http://www.rubygarden.org/ruby

Regards

    robert