Re^3: Sometimes undef is initialized and sometimes not when hash values are fed to grep

can't test the latter

Unfortunately, that one doesn't work:

use warnings;
use strict;
use Data::Dumper;
no autovivification;

my %h = (a => 'alfa', b => 'beta'); 

print map { ">>$_<<\n" } $h{a}, $h{333}, $h{b};
print Dumper(\%h);

__END__

Use of uninitialized value $_ in concatenation (.) or string at 111127
+86.pl line 8.
>>alfa<<
>><<
>>beta<<
$VAR1 = {
          '333' => undef,
          'a' => 'alfa',
          'b' => 'beta'
        };
[download]

Comment on Re^3: Sometimes undef is initialized and sometimes not when hash values are fed to grep Download Code

Replies are listed 'Best First'.
Re^4: Sometimes undef is initialized and sometimes not when hash values are fed to grep by LanX (Saint) on Feb 11, 2020 at 16:54 UTC
ugh .... :/ But I seem to remember that this glitch was also mentioned in the last thread. Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery FootballPerl is like chess, only without the dice}	[reply]