Because map operates on an alias of each element you don't need to assign the result of the map anywhere:

map {$_= lc} @beatles;

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However map in a void context is frowned on so it would be more usual to use for/foreach as a statement modifier:

$_ = lc for @beatles;

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DWIM is Perl's answer to Gödel

In reply to Re^2: tr/// on a list by GrandFather
in thread tr/// on a list by shoness

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