c381425bd3
Expressions can also occur in patterns, either after an equality or relational operator (e.g. `== e`), or after `const` (though what's allowed after `const` is heavily restricted). We need to make sure that the expression parser doesn't greedily treat `=>` as introducing a function expression when parsing these constructs inside a switch expression. But it's ok to allow function expressions inside list patterns, map patterns, parenthesized patterns, and in the argument part of object patterns. (These will be rejected by a later stage of analysis because expressions inside of patterns must be const, and a function expression can't be const. But the parser should still accept them so that we can give useful error messages). Fixes #50591. Bug: https://github.com/dart-lang/sdk/issues/50591 Change-Id: I828555782f5bc8cb8aae8a3948849b7a75bdec57 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/273286 Reviewed-by: Jens Johansen <jensj@google.com> Commit-Queue: Paul Berry <paulberry@google.com> |
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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
Visit dart.dev to learn more about the language, tools, and to find codelabs.
Browse pub.dev for more packages and libraries contributed by the community and the Dart team.
Our API reference documentation is published at api.dart.dev, based on the stable release. (We also publish docs from our beta and dev channels, as well as from the primary development branch).
Building Dart
If you want to build Dart yourself, here is a guide to getting the source, preparing your machine to build the SDK, and building.
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.