Method apply

returns/future.py:732–780

Calls a wrapped function in a container on this container. .. code:: python >>> import anyio >>> from returns.future import FutureResult >>> from returns.io import IOSuccess, IOFailure >>> def appliable(x: int) -> int: ... retu

(
        self,
        container: Kind2[
            'FutureResult',
            Callable[[_ValueType_co], _NewValueType],
            _ErrorType_co,
        ],
    )

        )

    def apply(
        self,
        container: Kind2[
            'FutureResult',
            Callable[[_ValueType_co], _NewValueType],
            _ErrorType_co,
        ],
    ) -> 'FutureResult[_NewValueType, _ErrorType_co]':
        """
        Calls a wrapped function in a container on this container.

        .. code:: python

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

          >>> def appliable(x: int) -> int:
          ...    return x + 1

          >>> assert anyio.run(
          ...     FutureResult.from_value(1).apply(
          ...         FutureResult.from_value(appliable),
          ...     ).awaitable,
          ... ) == IOSuccess(2)
          >>> assert anyio.run(
          ...     FutureResult.from_failure(1).apply(
          ...         FutureResult.from_value(appliable),
          ...     ).awaitable,
          ... ) == IOFailure(1)

          >>> assert anyio.run(
          ...     FutureResult.from_value(1).apply(
          ...         FutureResult.from_failure(2),
          ...     ).awaitable,
          ... ) == IOFailure(2)
          >>> assert anyio.run(
          ...     FutureResult.from_failure(1).apply(
          ...         FutureResult.from_failure(2),
          ...     ).awaitable,
          ... ) == IOFailure(1)

        """
        return FutureResult(
            _future_result.async_apply(
                dekind(container),
                self._inner_value,
            )
        )

    def bind(
        self,