Source code for returns._generated.pointfree.apply
def _apply(container):
"""
Turns container containing a function into a callable.
In other words, it modifies the function
signature from: ``Container[a -> b]`` to: ``Container[a] -> Container[b]``
This is how it should be used:
.. code:: python
>>> from returns.pointfree import apply
>>> from returns.maybe import Some, Nothing
>>> def example(argument: int) -> int:
... return argument + 1
>>> assert apply(Some(example))(Some(1)) == Some(2)
>>> assert apply(Some(example))(Nothing) == Nothing
>>> assert apply(Nothing)(Some(1)) == Nothing
>>> assert apply(Nothing)(Nothing) == Nothing
Note, that this function works for all containers with ``.apply`` method.
See :class:`returns.primitives.interfaces.Applicative` for more info.
"""
return lambda other: other.apply(container)