Front page | perl.perl5.porters |
Postings from October 1999
"Mark Mielke" <markm@nortelnetworks.com> writes: > my $a : string; > > $a ||= $b; # Just works "right" I have trouble understanding how this would work - strings can still be false if they are "0" or "". Anyway, I've been not following p5p closely and lately I have started poking my nose in again. I notice examples like you are giving above with a "my $a : string" or "our $FOO : export" being bandied about, and I'm not clear on what the new ": keyword" thing is supposed to be. However, would this work? my $a : default(shift, 42); The meaning of this would be the same as this: my $a = shift; $a = 42 unless defined $a; One could give a list of values in the list after ": defined", and the first non-undef one would be assigned to $a. --Bill. -- William R Ward hermit@bayview.com http://www.bayview.com/~hermit/ ----------------------------------------------------------------------------- The secret of being creative is making something that's not very new but just a little bit different in the right direction - Marvin MinskyThread Previous | Thread Next