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package MYPACKAGE; [...] my ($ab, $cd, $ef, ..., $yz) = map { ... some function of $_ ... } ('ab', 'cd', ..., 'yz');
my ($field1, ...) = map { __PACKAGE__ . '::' . $_ } ('field1', ...); [...] ... $self->{$field1} ...
foreach (qw(ab cd ef ... yz)) { ??? };