develooper Front page | perl.fwp | Postings from December 2001

Re: tri-state flags

Thread Previous | Thread Next
From:
sthoenna
Date:
December 5, 2001 21:28
Subject:
Re: tri-state flags
Message ID:
xxvD8gzkgy7W092yn@efn.org
In article <9b1r0uonrb1qj51r0hfpdl63b1cslc4d8j@4ax.com>,
Bart Lateur <bart.lateur@pandora.be> wrote:
>I often use tri-state flags, with possible value true (1), false (0), or
>undetermined (undef).
>
>The question is: how do you test for one of the flags, in particular for
>0, without warnings?

Here's one way :)

use Data::Dumper;
$Data::Dumper::Terse = 1;
if (Dumper($flag) eq '0') ...

Thread Previous | Thread Next


nntp.perl.org: Perl Programming lists via nntp and http.
Comments to Ask Bjørn Hansen at ask@perl.org | Group listing | About