note
merlyn
Yeah, the difference is the difference between "could this string be converted into a number without getting the warnings if -w is on?" vs "is this value always and only a number?". Everything in the latter case is also true for the former, but the inverse is not true. For example, all external data read from filehandles is always a string initially, so it could never pass this "is_numeric" test.
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<p>-- [http://www.stonehenge.com/merlyn/|Randal L. Schwartz, Perl hacker]
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Be sure to read [id://205373|my standard disclaimer] if this is a reply.</p>
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