Re^2: number regex (incl sci notation)

[rrwo]

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.

[tye]

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).