Fine. Record default values of formal parameters. Fine-grained manifests now capture more information about function and constructor parameters so the analyzer can detect semantically relevant changes. What’s changed - Record the default value of optional named and positional parameters as a `ManifestNode`, and include it in matching/serialization logic. - Track whether a parameter is an initializing formal (`this`) or a super formal (`super`) and persist these flags in manifests. - Add a `never_` entry to `ManifestAstElementKind` and collect `NeverElementImpl` so const initializers that reference `Never` are represented correctly. - Enhance result printing to display `this`/`super` markers, default values, and decode `Never` in element indices. - Bump `AnalysisDriver.DATA_VERSION` to 552 to invalidate stale caches. Why Previously, default parameter values and formal origin (`this`/`super`) were not part of the manifest. Changing them could leave linked data unchanged, producing stale analysis results. By encoding these details (and handling `Never`), we ensure manifest matching reflects the true API surface and triggers re-linking when defaults or formal kinds change. Change-Id: Icae8281f923879574fdc6143fd2c9d6018f4d48f Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/449363 Commit-Queue: Konstantin Shcheglov <scheglov@google.com> Reviewed-by: Johnni Winther <johnniwinther@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.