Regular Expressions

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Regular expressions are used for matching text.
You can test regular expressions online at [1].


Useful Regular Expressions

Mostly copied from Regex DB.

Floating Point Number

Without matching scientific notation (e.g. 1.5e-6). Reference

[-+]?[0-9]*\.?[0-9]+

With matching scientific notation (e.g. 1.5e-6). Reference
Capturing significand and exponent separately.

([-+]?\d*\.?\d+)(?:[eE]([-+]?\d+))?

Capturing the entire string together.

([-+]?\d*\.?\d+(?:[eE][-+]?\d+)?)