Bump VM packages to language version 3.12. This CL is part of an effort to bump the SDK requirement to `3.12.0-0` for all the packages in `pkg` that are not published to `pub`, so that we can get better testing of the "private named parameters" feature. (Packages that *are* published to `pub` can't be safely bumped yet, because SDK 3.12 hasn't been released, and I don't want to block those packages' ability to publish useful updates to customers.) This change covers the following packages, which are owned by OWNERS_VM: - pkg/dart2bytecode - pkg/dart2native - pkg/dtd_impl (jointly owned with OWNERS_DEVTOOLS) - pkg/mmap - pkg/observatory - pkg/vm Changes to `pubspec.yaml` files were made manually. Changes to `.dart` files were made automatically, using `dart fix`. Two kinds of changes were made: - Migrate to using private named parameters where it is possible to do so without changing semantics. Note that this migration is conservative; see https://github.com/dart-lang/sdk/issues/58607 for details. - Migrate to using null aware elements. Tested: Standard trybots Change-Id: I1666e5771a34ef3c30ceeadced3d505d6a6a6964 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/487942 Auto-Submit: Paul Berry <paulberry@google.com> Commit-Queue: Paul Berry <paulberry@google.com> Reviewed-by: Daco Harkes <dacoharkes@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 in our repo at docs.
The easiest way to contribute to Dart is to file issues.
You can also contribute patches, as described in Contributing.
Future plans for Dart are included in the combined Dart and Flutter roadmap on the Flutter wiki.