Today's release of the Dart SDK and Editor is the first beta release, and contains performance and productivity improvements across the platform. This latest release helps Dart developers automate code evolution, produce smaller JavaScript code and deploy Dart web apps.
The major additions and changes to the platform include:
- dart2js
- Added support for dart:typed_data
- Improved type inferrer by using union types and keeping track of side effects
- Implemented sharing of code mixed into multiple classes
- More coverage for handling of generic type
- Performance improvements
- 20% faster on Richards, 10% faster on DeltaBlue, 8% faster on Tracer
- Significant progress on mirrors support (work in progress)
- Dart VM
- DeltaBlue: 40% faster than M4
- Tracer: 33% faster than M4
- Full SIMD acceleration
- Reduced initial snapshot size
- improves startup time for new isolates
- Improved stability of debugging experience
- Editor
- A new 20% faster Analyzer in Editor and SDK.
- Remove old analyzer.
- More quick fixes and refactorings in Editor.
- Code Folding has returned with the new ability to collapse classes and local functions.
- Mark Occurrences is back.
- New Pub Deploy command.
- Many Code Completion enhancements
- Proposal filtering now accepts camelCase input (e.g., type 'i' then 'E' to filter out everything except isEmpty).
- Unused optional parameters are deleted automatically after template editing is done.
- Requesting completion in an empty argument list will include an option to insert the argument template.
- The seed is now case-insensitive (e.g., map.isemp+Ctrl-Space -> map.isEmpty).
- Greatly improved WebGL performance in Dartium because of move to dart:typed_data library for typed arrays.
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