Re^2: number regex (incl sci notation)

Scalar::Util's looks_line_number() routine checks the Perl API Looks Like Number field in the scalar.

In some cases your variable might have a string which is a valid number, but doesn't have that field set.

Comment on Re^2: number regex (incl sci notation)

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Re^3: number regex (incl sci notation) ("looks" not has IV) by tye (Sage) on Dec 08, 2004 at 06:24 UTC
There is no "looks like a number field" in a scalar. looks_like_number() checks whether a string looks like a number. This is independent of whether the scalar has an IV stored in it (which appears to be what you are thinking of). - tye	[reply]