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When is a numeric a numeric??

Discuss When is a numeric a numeric?? in the Perl Programming forum on Dev Shed.
When is a numeric a numeric?? Perl Programming forum discussing coding in Perl, utilizing Perl modules, and other Perl-related topics. Perl, the Practical Extraction and Reporting Language, is the choice for many for parsing textual information.

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Old January 30th, 2000, 09:24 AM
trellick trellick is offline
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Hopefully a very simple question this, but I have a file I'm reading and I want to check that some of the fields are actually numeric [or characters for that matter] for validation.

How can I do this?
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Old February 2nd, 2000, 04:55 PM
rindal rindal is offline
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You match your string against a pattern that defines your kind of numbers.

If you want to know if a string is an integer you write

$mystring =~ /^d*$/ or die "$mystring is not an integern";
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Old February 3rd, 2000, 08:38 AM
trellick trellick is offline
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>If you want to know if a string is an integer you write

>$mystring =~ /^d*$/ or die "$mystring is not an integern";

That's great thanks very much!
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