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ROS is nothing but a middleware with a set of tools and software frameworks for building and stimulating robots. ROS follows a stable release cycle, coming with a new version every year on 23rd of May.

ROS released its Melodic Morenia version this year on the said date, with a decent number of enhancements and upgrades. Following are the release notes:

class_loader header deprecation

class_loader’s headers has been renamed and the previous ones have been deprecated in an effort to bring them close to multi-platform support and its ROS 2 counterpart. You can refer to the migration script provided for the header replacements and PRs will be released for all the .packages in previous ROS distribution.

Kdl_parser package enhancement

Kdl_parser has now deprecated a method that was linked with tinyxml (which was already deprecated)


The tinyxml replacement code is as follows:
bool treeFromXml(const tinyxml2::XMLDocument * xml_doc, KDL::Tree & tree)

The deprecated API will be removed in N-turle.

OpenCV version update

For standardization reason, the OpenCV usage version is restricted to 3.2.

Enhancements in pluginlib

  • Similar to class_loader, the headers were deprecated here as well, to bring them closer to multi-platform support.
  • plugin_tool which was deprecated for years, has been finally removed in this version.

For more updates on the packages of ROS, refer to ROS Wiki page.

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