use default parameter descriptor in parameters interface (#765) (#794)

* use default parameter descriptor in parameters interface Signed-off-by: Karsten Knese <karsten@openrobotics.org> * use default parameter for value Signed-off-by: Karsten Knese <karsten@openrobotics.org>
ros2 · Jul 29, 2019 · f41e33c · f41e33c
1 parent 10c34ee
commit f41e33c
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/rclcpp/include/rclcpp/node_interfaces/node_parameters_interface.hpp b/rclcpp/include/rclcpp/node_interfaces/node_parameters_interface.hpp
@@ -51,8 +51,9 @@ class NodeParametersInterface
   const rclcpp::ParameterValue &
   declare_parameter(
     const std::string & name,
-    const rclcpp::ParameterValue & default_value,
-    const rcl_interfaces::msg::ParameterDescriptor & parameter_descriptor) = 0;
+    const rclcpp::ParameterValue & default_value = rclcpp::ParameterValue(),
+    const rcl_interfaces::msg::ParameterDescriptor & parameter_descriptor =
+    rcl_interfaces::msg::ParameterDescriptor()) = 0;
 
   /// Undeclare a parameter.
   /**