Here's a test, which shows the same behaviour happening as for arrays: #!/usr/bin/perl
use Data::Dumper;
my %h = ( aa => hello, bb => ghello );
foreach ( values %h ) { s/el/ig/g };
print Dumper( \%h );
Output:
$VAR1 = {
'aa' => 'higlo',
'bb' => 'ghiglo'
};
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