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Dart 1.2 continues to improve developer experience

With the 1.2 release, the Dart team continues its commitment to regular, compatible updates to our core runtime and tools. This release includes improved debugging, faster networking, and Angular support in the Editor.

Debugging Dart applications is now easier. Breakpoints can now be set at local variable assignments. A number of bugs have also been addressed, including stepping through recursive functions and eliminating side effects of using the debugger.

The Dart core libraries continue to improve with a focus on performance. WebSocket throughput has increased by a factor of 15 since version 1.0. The speed of our core async primitives, Future and Stream, also improved by over 10%.



Angular support in the Editor has been greatly improved in this release. Search, navigation, and refactoring now understand Angular elements. A number of Angular-specific warnings have also been added.

Please see the Release Notes for a description of all changes. Dart 1.2 includes bug fixes, performance improvements, and enhancements across the Dart virtual machine, compiler, libraries and tools.

You can download v1.2 at the Download Dart page. If you are running the Dart Editor, you can update by checking "About Dart Editor" in the IDE.

Tell us what you build with Dart in our Google+ community and let us know if you have any issues or feature requests.

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