Thanks, however my problem is that I have a code with a lot of lines with:

my $out = sprintf "%.3E", $h{A};

were %h is a hash with nested keys and I would need to add the shortest code to the end of line to print the label MISSING.

In reply to Re^2: Printing non existing hash values as "missing" by Anonymous Monk
in thread Printing non existing hash values as "missing" by Anonymous Monk

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