Hi Guys,

Why does a Perl expression acting on an empty nested hash element create parents for the element eg: 

#!/usr/bin/perl -w


use strict;
use warnings;

my %a;
my $a = scalar keys %{a};
print $a,"\n";
if (not exists $a{a}{a}{a}){
    $a = scalar keys %{a};
    print $a,"\n";

}

print "End\n";

[download]

prints: 

0
1
End

[download]

not 

0
0
End

[download]

And is the only way to avoid this, to check the higher levels of the hash first?

Regards

Steve

In reply to Why does perl expression in empty nested hash create parents by Steve_BZ

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