Eloy Briceno

Modifies timers API to select autostart state

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Signed-off-by: Voldivh This PR addresses the [issue](https://github.com/ros2/rclcpp/issues/1980). Basically it gives the timer initialization a variable that enables or disables the autostart on initialization. The variable `autostart` is defaulted to `True`...

This PR is a follow up of [rcl#1004](https://github.com/ros2/rcl/pull/1004) and should be merged after that PR is merged. Signed-off-by: Voldivh

Timer that can be triggered a finite number of times.

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This PR addresses the #1990. Basically it gives the timers API the possibility to select the number of times the timer will be triggered and be canceled after that using...

Modifies timers API to select autostart state

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Signed-off-by: Voldivh This PR addresses the issue #1980. Basically it gives the timers API a variable that enables or disables the start of the timer at initialization. The variable `autostart`...

A timer that can be triggered a finite number of times.

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## Feature request #### Feature description There can be situations in which you would like to call a function a finite number of times within the (same period of time)...

Create a timer that does not get triggered as soon as it is initialized.

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## Feature request #### Feature description Create a timer that does not get's triggered at the moment of initialization. There are several ways to create a timer which executes periodically...

## Environment * OS Version: Ubuntu Jammy * Binary installation ``` Warning [Utils.cc:130] [/sdf/plugin[@name="gz::sim::systems::Label"]::L1]: XML Element[plugin], child of element[sdf], not defined in SDF. Copying[plugin] as children of [sdf] ``` ##...

Modifies the use of __slots__ for get_fields_and_field_types method

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**Public API Changes** None **Description** The attribute `__slots__` from a message represents all the attributes from the python class for that message, not only the field names of each component...

## Environment * MacBook Pro 2021, Apple M1 Max, 32 GB * OS Version: MacOS Ventura 13.4 * Source Build ## Description After building this package from source and running...