![]() A desired feature for flow analysis of patterns is that the matched value type of one subpattern may depend on promotions from previous patterns. For example, we want this to work: int? x = ...; if (x case null || < 0) ...; This means that although the type of the scrutinee is `int?`, after the subpattern `null` has been processed, type promotion should promote the matched value type to `int`, so that the subpattern `< 0` doesn't report an error. This requires changing the API of the shared patterns analysis logic, so that the client is no longer responsible for passing around the matched value type. Instead, flow analysis keeps track of it and provides it to the client when requested. In follow-up CLs I'll add the necessary logic to flow analysis to actually promote the matched value type in situations like the example above. Change-Id: I6ce66962af32f9bd93bfe4082ba256de627d3cc6 Bug: https://github.com/dart-lang/sdk/issues/50419 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/274942 Commit-Queue: Paul Berry <paulberry@google.com> Reviewed-by: Chloe Stefantsova <cstefantsova@google.com> |
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benchmarks | ||
build | ||
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pkg | ||
runtime | ||
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sdk | ||
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tools | ||
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AUTHORS | ||
BUILD.gn | ||
CHANGELOG.md | ||
codereview.settings | ||
CONTRIBUTING.md | ||
DEPS | ||
LICENSE | ||
OWNERS | ||
PATENT_GRANT | ||
PRESUBMIT.py | ||
README.dart-sdk | ||
README.md | ||
sdk_args.gni | ||
SECURITY.md | ||
WATCHLISTS |
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.