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37 changes: 36 additions & 1 deletion source/Releases/Release-Kilted-Kaiju.rst
Original file line number Diff line number Diff line change
Expand Up @@ -93,7 +93,42 @@ See https://github.com/ros2/rclcpp/pull/2759 for more details.
Static Type Checking
""""""""""""""""""""

Static type checking improvements to ensure that user application is using variables and functions correctly.
Added static type hints to ``ActionClient`` and ``ActionServer``.

See https://github.com/ros2/rclpy/pull/1349 for more details.

Add support for `generics <https://typing.python.org/en/latest/reference/generics.html>`_ in ``pub/sub/client/server/actions``, ``Future/Task``, and ``Parameter``.

``Publisher``, ``Subscription``, ``Server``, ``Task``, and ``Parameter`` should need no updates to add support for generics.

``Client`` will need to be updated to resemble the following to get the improved type checking.

.. code-block:: python

self._get_parameter_client: Client[GetParameters.Request,
GetParameters.Response] = self.node.create_client(
GetParameters, '/get_parameters',
qos_profile=qos_profile, callback_group=callback_group)

``ActionClient`` will need to be updated to resemble the following to get the improved type checking.

.. code-block:: python

ac: ActionClient[Fibonacci.Goal,
Fibonacci.Result,
Fibonacci.Feedback] = ActionClient(self.node, Fibonacci, 'fibonacci')

``Future`` will need to be updated to resemble the following to get the improved type checking.

.. code-block:: python

log_msgs_future: Future[bool] = Future()

See https://github.com/ros2/rclpy/pull/1239, https://github.com/ros2/rclpy/pull/1275, https://github.com/ros2/rclpy/pull/1246, and https://github.com/ros2/rclpy/pull/1254/files for more details.

Various other small improvements and corrections have also been made throughout all of ``rclpy``.

Python types can be statically checked using `ament_mypy <https://github.com/ament/ament_lint/tree/kilted/ament_mypy>`_ which wraps `mypy <https://www.mypy-lang.org/>`_.

EventsExecutor
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