https://bugzilla.redhat.com/show_bug.cgi?id=2055608 Jitka Plesnikova <jplesnik@xxxxxxxxxx> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |NOTABUG Doc Type|--- |If docs needed, set a value Status|NEW |CLOSED Last Closed| |2022-02-17 11:42:53 --- Comment #1 from Jitka Plesnikova <jplesnik@xxxxxxxxxx> --- This behavior is describe in perldoc for 'exists': Note that the EXPR can be arbitrarily complicated as long as the final operation is a hash or array key lookup or subroutine name: if (exists $ref->{A}->{B}->{$key}) { } if (exists $hash{A}{B}{$key}) { } if (exists $ref->{A}->{B}->[$ix]) { } if (exists $hash{A}{B}[$ix]) { } if (exists &{$ref->{A}{B}{$key}}) { } Although the most deeply nested array or hash element will not spring into existence just because its existence was tested, any intervening ones will. Thus "$ref->{"A"}" and "$ref->{"A"}->{"B"}" will spring into existence due to the existence test for the $key element above. This happens anywhere the arrow operator is used, including even here: undef $ref; if (exists $ref->{"Some key"}) { } print $ref; # prints HASH(0x80d3d5c) -- You are receiving this mail because: You are on the CC list for the bug. https://bugzilla.redhat.com/show_bug.cgi?id=2055608 _______________________________________________ perl-devel mailing list -- perl-devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to perl-devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/perl-devel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
