![]() When a local variable is promoted to a record type, and then an assignment statement is used to assign a record literal to that local variable, if the fields of the new record literal are not assignable to the fields of the promoted record type, that's not a problem; both the analyzer and front end agree that the local variable is simply demoted. But the spec implies that if the old and new record _shapes_ are the same, then a compile-time error will occur instead of a demotion. I've created https://github.com/dart-lang/language/pull/3613 to bring the spec in line with the implementations. This test demonstrates the current behavior of the implementations, and makes sure that it doesn't regress. Change-Id: I0eacd7ca7f6579a35dbc34687113a2112418f368 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/352462 Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Paul Berry <paulberry@google.com> |
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benchmarks | ||
build | ||
docs | ||
pkg | ||
runtime | ||
samples | ||
sdk | ||
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third_party | ||
tools | ||
utils | ||
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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.code-workspace | ||
sdk_args.gni | ||
SECURITY.md | ||
WATCHLISTS |
Dart
An approachable, portable, and productive language for high-quality apps on any platform
Dart is:
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Approachable: Develop with a strongly typed programming language that is consistent, concise, and offers modern language features like null safety and patterns.
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Portable: Compile to ARM, x64, or RISC-V machine code for mobile, desktop, and backend. Compile to JavaScript or WebAssembly for the web.
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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:
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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.