[nlitened]

I am not trying to argue, rather being curious.

I've tried to look up what "pure functional" means exactly, and failed to find anything better than Wikipedia[0]:

    In computer programming, a pure function is a function that has the following properties:
    1. the function return values are identical for identical arguments (no variation with local static variables, non-local variables, mutable reference arguments or input streams), and
    2. the function has no side effects (no mutation of local static variables, non-local variables, mutable reference arguments or input/output streams).

I don't see how that excludes exceptions. I agree that exceptions kind of "feel" imperative rather than functional, but could you maybe help me find an accepted definition which excludes exceptions?

[0] https://en.wikipedia.org/wiki/Pure_function

[xh-dude]

I think it excludes exceptions: exceptions are a side effect