Paul Berry
bf56b2ca2c
We produce a diagnostic under the following conditions: - For compound assignments, if the type read from the LHS is nullable (this is illegal after NNBD, and requires user intervention to fix). - For compound assignments, if the type returned from the combiner is not assignable to the LHS (this was required prior to NNBD, but it is a stricter condition after migration, both because the LHS might have a non-nullable type, and because implicit downcasts are not allowed). - For null-aware assignments, if the type read from the LHS is non-nullable (this indicates that once strong mode is enabled, the assignment will be dead code). Bug: https://github.com/dart-lang/sdk/issues/38676 Change-Id: Icb242ba36437e38364ada069880831eb05e3a513 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/145664 Reviewed-by: Mike Fairhurst <mfairhurst@google.com>
Dart
A client-optimized language for fast apps on any platform
Dart is:
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Optimized for UI: Develop with a programming language specialized around the needs of user interface creation
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Productive: Make changes iteratively: use hot reload to see the result instantly in your running app
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Fast on all platforms: Compile to ARM & x64 machine code for mobile, desktop, and backend. Or compile to JavaScript for the web
Dart's flexible compiler technology lets you run Dart code in different ways, depending on your target platform and goals:
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Dart Native: For programs targeting devices (mobile, desktop, server, and more), Dart Native includes both a Dart VM with JIT (just-in-time) compilation and an AOT (ahead-of-time) compiler for producing machine code.
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Dart Web: For programs targeting the web, Dart Web includes both a development time compiler (dartdevc) and a production time compiler (dart2js).
License & patents
Dart is free and open source.
See LICENSE and PATENT_GRANT.
Using Dart
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Building Dart
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There are more documents on our wiki.
Contributing to Dart
The easiest way to contribute to Dart is to file issues.
You can also contribute patches, as described in Contributing.