'Efficient' is whether an alternative regular expression benchmarks faster than an existing solution. I'm looking for an approach that validates floats, or any other complex 'thing' embedded in a string, with a single regex rather than the two-step approach in the example, and no, I did not (yet) attempt a solution that extracts multiple float candidates from a single string (/g is likely). An example is just that, an example, that one can build on once one understands the limitations of one approach and the additional capabilities of an alternative approach. I tried to make it clear in my write-up that I am trying to build on lots of experience and knowledge gained from studying Friedl, without access to anything later (he used 5.8.8) or more advanced than Friedl. Cookbook, 2nd takes the regex technology only up to 5.14, so it misses the mark too on illuminating the regex state-of-the-art. More to do...

In reply to Re^2: Best practice validating numerics with regex? by Anonymous Monk
in thread Best practice validating numerics with regex? by perlboy_emeritus

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