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Re: tri-state flags
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From:
abigail
Date:
December 5, 2001 02:35
Subject:
Re: tri-state flags
Message ID:
20011205103400.703.qmail@foad.org
On Wed, Dec 05, 2001 at 05:11:43AM -0500, Michel Lambert wrote:
> > defined $flag && !$flag
> > So, who does better?
>
>
> defined ($var = $flag) && !$var
>
> $flag is only evaluated once. :)
But Bart said he wanted to test for 0. The test above, and several of
the other proposals don't distinguish between 0 and the empty string.
do {no warnings; not local $_ = $flag and length};
Abigail
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