Add `@mustBeConst` annotation for parameters which should be constant. As const-only parameters are not planned, see https://github.com/dart-lang/language/issues/1684, an annotation with analyzer support could help a bit at least, see https://github.com/dart-lang/sdk/issues/29381. The motivation is to enforce const arguments for methods annotated with `@ResourceIdentifier`, to be able to record the argument values at build time, see https://dart-review.googlesource.com/c/sdk/+/329961. Tested: pkg/analyzer/test/src/diagnostics/const_argument_test.dart Change-Id: I2b8d2dce0c899fc0caa4985d892a5d031c747521 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/357701 Reviewed-by: Phil Quitslund <pquitslund@google.com> Reviewed-by: Lasse Nielsen <lrn@google.com> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Moritz Sümmermann <mosum@google.com> Reviewed-by: Marya Belanger <mbelanger@google.com>
Dart is:
Approachable: Develop with a strongly typed programming language that is consistent, concise, and offers modern language features like null safety and patterns.
Portable: Compile to ARM, x64, or RISC-V machine code for mobile, desktop, and backend. Compile to JavaScript or WebAssembly for the web.
Productive: Make changes iteratively: use hot reload to see the result instantly in your running app. Diagnose app issues using DevTools.
Dart's flexible compiler technology lets you run Dart code in different ways, depending on your target platform and goals:
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.
Dart Web: For programs targeting the web, Dart Web includes both a development time compiler (dartdevc) and a production time compiler (dart2js).
Dart is free and open source.
See LICENSE and PATENT_GRANT.
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).
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.
The easiest way to contribute to Dart is to file issues.
You can also contribute patches, as described in Contributing.