my %h1 = qw( a 1  b 2  c 3      );
my %h2 = qw(      b 7  c 8  d 4 );

my %h3 = map { $_ => $h1{$_} // 0 + $h2{$_} // 0 } keys %h1, keys %h2;

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No warnings, merges both hashes


Enjoy, Have FUN! H.Merijn

In reply to Re^3: merge two hashes into one by Tux
in thread merge two hashes into one by ovedpo15

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