in reply to Perl Idioms Explained - $|++
This is a pet peeve of mine. I really, really dislike it when people use decrement or increment on $|. If $| is already zero then decrementing it doesn't cause it to remain false, it becomes true. Ugh! I think that by using increment on $| you imply that decrement would also be sane. It isn't and the only sane way to cause $| to be false is through an assignment. Arithmetic on $| is hooey.
Added note: you're supposed to say $| = 1 and $| = 0. At least then you know what the value of $| will be.
$ perl -le 'for(0..4){print $|--}' 0 1 0 1 0 $ perl -le 'for(0..4){print $|++}' 0 1 1 1 1
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Replies are listed 'Best First'. | |
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Re: Re: Poor Perl Idioms Explained (except not really)
by Elian (Parson) on Aug 01, 2003 at 18:02 UTC | |
(jeffa) Re: Poor Perl Idioms Explained (except not really)
by jeffa (Bishop) on Aug 02, 2003 at 14:12 UTC | |
by robin (Chaplain) on Oct 26, 2005 at 17:00 UTC | |
by QM (Parson) on Oct 26, 2005 at 17:28 UTC | |
by jeffa (Bishop) on Oct 26, 2005 at 17:35 UTC |
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