conjoin()

Returns a function that tests whether **all** elements of a sequence pass **all** of the provided predicates.

Implementation

Args: *preds: Functions to conjoin. Returns: A function that takes an iterable, and returns True if all elements of the iterable pass all predicates, False otherwise.

Example

                            is_even = lambda x: x % 2 == 0
is_positive = lambda x: x > 0
both = conjoin(is_even, is_positive)
both([2, 4, 6])
                        

Expected output: True

Alternative usage:

both([2, 4, 6, -2])

Expected output: False

Source Code

                        def conjoin(*preds):
    def wrapper(seq):
        return all(all(p(x) for p in preds) for x in seq)
    return wrapper
                    