What to know first
Test regular expressions against sample text with flags and highlighted matches. This guide looks at using the regex tester in a real development workflow, using the Regex Tester to turn that into a decision you can act on.
How to use the tool
Run real project data through the tool rather than sample text, so you can trust the output before it goes into a build or deployment.
When to get expert help
For production systems, checks like this are usually automated in a CI pipeline. Dean Da Dev can wire this kind of validation into your existing development workflow.