Regex: The simple approach
Regular Expressions (RegEx) can be quite complex to understand. For a simple start, I have made a "Regex for Dummies" guide, which you will find below:
Simplifications
In order to make it an easy start, I made 2 assumptions:
As an input string, we just look at one line. Multi-line strings are excluded from this tutorial.
A result can only be "True" or "False". "True" means the Regex matches the input string at least once. "False" means the Regex does not match the input string at all.
Overview
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