If you've got a list of valid apt numbers probably the most efficient thing to do would be create a hash and use that to validate

The danger here is when a valid apartment number (either now or in the future) is also a valid year.

The OP appears to have listed 2022 as being an apartment number - and that's certainly a valid year...

In reply to Re^2: Text switching by Bod
in thread Text switching by htmanning

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