And you can prevent the used only once warning, by using them twice. Eg. add a line $a = $b;.

use vars qw($a $b); will also quiet the warning.

But I don't understand why the warning should arise in the first place, especially from the use of such a common module as List::MoreUtils. The warning is not triggered by the solitary presence of  $a and  $b in the comparison block of the sort built-in. If this is an issue with List::MoreUtils and its ilk, shouldn't this be taken care of within the module somehow (but don't ask me how)?

In reply to Re^2: converting strings to ints by AnomalousMonk
in thread converting strings to ints by 7stud

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