Thanks LanX.

I'm trying to modify your code to handle update #2 in my original post, i.e. this line: 

@hash{@keys} = ('value2') x @keys

[download]
This test seems to work as I want it to: 
perl -MData::Dump -e '@hash{(key1,key2)} = ({a=>1, b=>2},{a=>1,b=>2});
+dd \%hash'
{ key1 => { a => 1, b => 2 }, key2 => { a => 1, b => 2 } }

[download]
But when I try to multiply the values out, it doesn't: 
perl -MData::Dump -e '@hash{(key1,key2)} = ({a=>1, b=>2}) x 2;dd \%has
+h'
do {
  my $a = { key1 => { a => 1, b => 2 }, key2 => 'fix' };
  $a->{key2} = $a->{key1};
  $a;
}

[download]
And the debugger didn't shed any light for me, either.
What am I doing wrong, please?  And what's that 'fix' thing about?

In reply to Re^6: Combinations of lists, etc by tel2
in thread Combinations of lists to a hash by tel2

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