Re: feature request (&&/|| shortcut)
On Sun, Jan 02, 2011 at 05:29:08PM +0100, Arnold Nipper wrote: > It looks like BIRD logical && operator is not doing a shortcut. I.e even > if you have s.th. like > > if 0 && $some_complex_expression then ... > if 1 || $some_complex_expression then ... > > BIRD will try to evaluate $some_complex_expression. Would really be > great if you could short cut this as you may have situations where the > first expression already is false while trying to evaluate 2nd > expression may lead to run time errors in that case. In this case you > would have to use a nested "if first_expression then if 2nd_expression > then" instead of "if first_expression && 2nd_expression then" You are right, short-circuit evaluation is probably a better behavior. I will look at that and probably change that. -- Elen sila lumenn' omentielvo Ondrej 'SanTiago' Zajicek (email: santi...@crfreenet.org) OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net) "To err is human -- to blame it on a computer is even more so." signature.asc Description: Digital signature
Re: feature request (&&/|| shortcut)
on 02.01.2011 17:29 Arnold Nipper wrote: > First of all a Happy New Year and a prosperous and successfull 2011 to > everyone! May all your wishes come through! > > > It looks like BIRD logical && operator is not doing a shortcut. I.e even > if you have s.th. like > > if 0 && $some_complex_expression then ... > if 1 || $some_complex_expression then ... > > BIRD will try to evaluate $some_complex_expression. Would really be > great if you could short cut this as you may have situations where the > first expression already is false while trying to evaluate 2nd > expression may lead to run time errors in that case. In this case you > would have to use a nested "if first_expression then if 2nd_expression > then" instead of "if first_expression && 2nd_expression then" > no one bites? Best regards, Arnold -- Arnold Nipper / nIPper consulting, Sandhausen, Germany email: arn...@nipper.de phone: +49 6224 9259 299 mobile: +49 152 53717690 fax: +49 6224 9259 333 signature.asc Description: OpenPGP digital signature
feature request (&&/|| shortcut)
First of all a Happy New Year and a prosperous and successfull 2011 to everyone! May all your wishes come through! It looks like BIRD logical && operator is not doing a shortcut. I.e even if you have s.th. like if 0 && $some_complex_expression then ... if 1 || $some_complex_expression then ... BIRD will try to evaluate $some_complex_expression. Would really be great if you could short cut this as you may have situations where the first expression already is false while trying to evaluate 2nd expression may lead to run time errors in that case. In this case you would have to use a nested "if first_expression then if 2nd_expression then" instead of "if first_expression && 2nd_expression then" TIA and best regards, Arnold -- Arnold Nipper / nIPper consulting, Sandhausen, Germany email: arn...@nipper.de phone: +49 6224 9259 299 mobile: +49 152 53717690 fax: +49 6224 9259 333 signature.asc Description: OpenPGP digital signature
