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Simple function to enforce whitelist (ensure that a string includes only certain characters) and blacklist (ensure that a string absolutely does not include certain characters).

Want to make sure that a string includes only certain characters? Create a whitelist. Want to make sure that a string absolutely does not include certain characters? Create a blacklist. Both are easy to do with this simple function and structure.



Verified by

Verified on


Verified by

Ted Teah

Verified on

21 August 2007

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