Maybe

class fpylib.functors.maybe.Maybe(value: Optional[fpylib.types._T] = None)[source]

This is a implementation of the Maybe Monad of Haskell. It is a functor, applicative and monad.

bind(func: Callable[[fpylib.types._T], fpylib.types._S]) → fpylib.functors.maybe.Maybe[fpylib.types._S][source]

Return a Just pr Nothing value based on if occur an error or not.

Parameters: func (Callable[[T], S]) – The function to be applied.
Returns: Just value or Nothing

unit(value: fpylib.types._T) → fpylib.functors.maybe.Maybe[fpylib.types._T][source]

Return a Just pr Nothing value based on if the value is None or not.

Parameters: value (T) – The value to be checked.
Returns: Just value or Nothing

class fpylib.functors.maybe.Just(value: Optional[fpylib.types._T] = None)[source]

class fpylib.functors.maybe.Nothing(*failure: Optional[Exception])[source]

fails() → bool[source]

fpylib.functors.maybe.maybe_conditioner(func: Callable[[...], fpylib.types._T]) → Callable[[...], fpylib.functors.maybe.Maybe[fpylib.types._T]][source]

Conditioner for Maybe.

Parameters: func (Callable[..., T]) – The function to wrap in a Monad.
Returns: The wrapped function.
Return type: Callable[…, Monad[T]]