in reply to 5.8.1 Released!
For those of you who cannot wait until 5.10 and/or Ponie to be able to use "defined or", H. Merijn Brand has uploaded the necessary source patches. When you apply this patch to the 5.8.1 source tree, you get a new operator // (defined-or). This allows you to say
instead of$a // $b
anddefined $a ? $a : $b
instead of$c //= $d;
The operator has the same precedence and associativity as ||.$c = $d unless defined $c;
H. Merijn Brand uses this in his production environments for quite some time already, so it appears to be pretty stable. Of course, using this operator will make your code unportable to "standard" Perl 5.8.1, so YMMV.
Liz
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Re: defined or: // and //=
by Abigail-II (Bishop) on Sep 25, 2003 at 20:43 UTC |
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