Source code for returns._generated.pointfree.bind_async_future_result
def _bind_async_future_result(function):
"""
Compose a container and ``async`` function returning a ``FutureResult``.
In other words, it modifies the function's
signature from: ``a -> Awaitable[FutureResult[b, c]]``
to: ``Container[a, c] -> Container[b, c]``
This is how it should be used:
.. code:: python
>>> import anyio
>>> from returns.future import FutureResult
>>> from returns.context import ReaderFutureResult
>>> from returns.io import IOSuccess, IOFailure
>>> from returns.pointfree import bind_async_future_result
>>> async def coroutine(x: int) -> FutureResult[str, int]:
... return FutureResult.from_value(str(x + 1))
>>> bound = bind_async_future_result(coroutine)(
... ReaderFutureResult.from_value(1),
... )
>>> assert anyio.run(bound, ReaderFutureResult.empty) == IOSuccess('2')
>>> bound = bind_async_future_result(coroutine)(
... ReaderFutureResult.from_failure(1),
... )
>>> assert anyio.run(bound, ReaderFutureResult.empty) == IOFailure(1)
"""
return lambda container: container.bind_async_future_result(function)