use Scalar::Util 'looks_like_number';
while (<>) {
    chomp;
    print (
        "$_ ",
        looks_like_number($_)? 'looks' : 'does not look',
        " like a number.\n"
    );
}

[download]
42
42 looks like a number.
foo
foo does not look like a number.

[download]

In reply to Re: perl typecasting by Narveson
in thread perl typecasting by perl_junkie

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