| Subject: | defined %foo and defined @foo an error |
Starting from perl 5.22 defined is no longer permitted on aggregates, ie. hashes and arrays.
This has been warning as deprecated since at least 5.12, since it's behaviour is non-obvious.
For an array or hash it doesn't check whether it has any elements, but whether some
internal data structures have been initialized, for example:
# perl 5.14.2
$ perl -M-warnings -le 'for (1 .. 2) { my %x; print 0+defined %x; print scalar keys %x; $x{abc} = 1 }'
0
0
1
0
The attached patch fixes the problem in Sub-Recursive.
Tony
| Subject: | sub-recursive-defined.diff |
diff -ru Sub-Recursive-0.03-EetaZk/t/02mutually.t Sub-Recursive-0.03-cEDMJN/t/02mutually.t
--- Sub-Recursive-0.03-EetaZk/t/02mutually.t 2005-03-12 01:43:02.000000000 +1100
+++ Sub-Recursive-0.03-cEDMJN/t/02mutually.t 2015-03-30 15:47:52.000000000 +1100
@@ -7,7 +7,7 @@
BEGIN { use_ok('Sub::Recursive', qw/ mutually_recursive %REC /) }
-ok(defined %REC, '%REC defined');
+ok(%REC, '%REC defined');
ok(defined &mutually_recursive, '&mutually_recursive defined');
my ($odd, $even) = mutually_recursive(
Only in Sub-Recursive-0.03-cEDMJN/t: 02mutually.t~
diff -ru Sub-Recursive-0.03-EetaZk/t/90other.t Sub-Recursive-0.03-cEDMJN/t/90other.t
--- Sub-Recursive-0.03-EetaZk/t/90other.t 2005-03-12 01:43:02.000000000 +1100
+++ Sub-Recursive-0.03-cEDMJN/t/90other.t 2015-03-30 15:49:04.000000000 +1100
@@ -10,7 +10,7 @@
ok(defined $REC, '$REC defined');
ok(defined &recursive, '&recursive defined');
-ok(defined %REC, '%REC defined');
+ok(%REC, '%REC defined');
ok(defined &mutually_recursive, '&mutually_recursive defined');
Only in Sub-Recursive-0.03-cEDMJN/t: 90other.t~