> And so far; neither you nor I have come up with a use case.

trivial example 

%salary=(
     boss      => 1_000,
     secretary => 300,
     admin     => 600,
     janitor   => 150,
    );

print
  map {"$_ earns $salary{$_} \n" }
  sort { $salary{$a} <=> $salary{$b} }
  grep { $salary{$_} > 500 }
  keys %salary;

[download]

translating it to hmap, hsort and hgrep is left as an excercise.

Cheers Rolf

In reply to Re^14: Is there any difference between prototype % and @ ? by LanX
in thread Is there any difference between prototype % and @ ? by LanX

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