in reply to Find nonnumeric scalars

Isn't this a good example why one should use perl's taint mode?

That will (gently) force you to check *all* data that comes from an outside and not fully trusted source.

Regexp::Common may help you to check for real or integer numbers.

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

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