comment on

Returning more (or less even) elements than provided is very natural for map and very commonly used, especially for generating hashes ..

For those not familiar with returning less -- use an empty list (). To build on davidrw's example:

perl -MData::Dumper -le 'my %oddcubes = map { $_%2 ? ($_ => $_**3) : (
+) } 1..9; print Dumper \%oddcubes'
$VAR1 = {
          '1' => 1,
          '3' => 27,
          '7' => 343,
          '9' => 729,
          '5' => 125
        };
[download]

In reply to Re^2: Parsing attributes in one line using map by jhourcle
in thread Parsing attributes in one line using map by ruoso

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