Firstly, I was wondering if there was some kind of built in function that would check to see if a regex pattern was valid or not. I don't want to check to see if the expression works – I simply want to check it to make sure that the syntax of the pattern is valid – if that's possible.
If there is no built in function to do so, how do I do it on my own? Do I even need to?
Is there a directory of built in functions/modules that I can search so I can avoid more questions like this? Thank you.
EDIT: I should mention that I plan on generating these patterns on the fly based on user input – which is why I'd like to validate them to make sure they will actually run.