diff options
Diffstat (limited to 'pod/perldiag.pod')
| -rw-r--r-- | pod/perldiag.pod | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/pod/perldiag.pod b/pod/perldiag.pod index b6558ec998..ad5841ca34 100644 --- a/pod/perldiag.pod +++ b/pod/perldiag.pod @@ -912,6 +912,14 @@ for stdout. (F) The script you specified can't be opened for the indicated reason. +=item Can't provide tied hash usage; use keys(%hash) to test if empty + +(F) When a hash is evaluated in scalar context, bucket usage is +returned if the hash is populated, and false is returned if the hash +is empty. Bucket usage is not currently available for tied hashes. +To test if a hash is empty or populated, use keys(%hash) in scalar +context instead. + =item Can't read CRTL environ (S) A warning peculiar to VMS. Perl tried to read an element of %ENV |