Method bind_io

returns/future.py:318–342

Applies 'function' to the result of a previous calculation. 'function' should accept a single "normal" (non-container) argument and return ``IO`` type object. .. code:: python >>> import anyio >>> from returns.future import Future >>>

(
        self,
        function: Callable[[_ValueType_co], IO[_NewValueType]],
    )

        )

    def bind_io(
        self,
        function: Callable[[_ValueType_co], IO[_NewValueType]],
    ) -> 'Future[_NewValueType]':
        """
        Applies 'function' to the result of a previous calculation.

        'function' should accept a single "normal" (non-container) argument
        and return ``IO`` type object.

        .. code:: python

          >>> import anyio
          >>> from returns.future import Future
          >>> from returns.io import IO

          >>> def bindable(x: int) -> IO[int]:
          ...    return IO(x + 1)

          >>> assert anyio.run(
          ...     Future.from_value(1).bind_io(bindable).awaitable,
          ... ) == IO(2)

        """
        return Future(_future.async_bind_io(function, self._inner_value))

    def __aiter__(self) -> AsyncIterator[_ValueType_co]:  # noqa: WPS611
        """API for :ref:`do-notation`."""