I don't know if its better, but TMTOWTDI (I assume by 'number', you mean 'integer'):
while (<>) {
 chomp;
 # All do the same thing
 print "$_ is a number" unless tr/0-9//c;
 print "$_ is a number" unless /\D/;
 print "$_ is a number" if /^\d+$/;
}

[download]
All in all, /\D/ is probably as good as any, but if you're really curious you can benchmark :-)

In reply to Re: Number? by runrig
in thread Number? by Anonymous Monk

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