Method bind_future

returns/future.py:998–1027

Binds a function returning ``Future[a]`` container. .. code:: python >>> import anyio >>> from returns.io import IOSuccess, IOFailure >>> from returns.future import Future, FutureResult >>> def bind(inner_value: int) -> Future[float]:

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

        )

    def bind_future(
        self,
        function: Callable[[_ValueType_co], Future[_NewValueType]],
    ) -> 'FutureResult[_NewValueType, _ErrorType_co]':
        """
        Binds a function returning ``Future[a]`` container.

        .. code:: python

          >>> import anyio
          >>> from returns.io import IOSuccess, IOFailure
          >>> from returns.future import Future, FutureResult

          >>> def bind(inner_value: int) -> Future[float]:
          ...     return Future.from_value(inner_value + 0.5)

          >>> assert anyio.run(
          ...     FutureResult.from_value(1).bind_future(bind).awaitable,
          ... ) == IOSuccess(1.5)
          >>> assert anyio.run(
          ...     FutureResult.from_failure(1).bind_future(bind).awaitable,
          ... ) == IOFailure(1)

        """
        return FutureResult(
            _future_result.async_bind_future(
                function,
                self._inner_value,
            )
        )

    def bind_async_future(
        self,