c15f054809
The `EfficientLengthIterable` is an internal marker interface that allows the SDK to more efficiently check, effectively, `v is List || v is Set || v is Queue`, and some other known internal types, which allows it to assume that `.length` is efficient and doesn't iterate the iterable. It's not intended for external use, but the current design both has the name mentioned specifically in the declaration of the public types `List`, `Set` and `Queue`, and possibly allows the type to leak through the least-upper-bound algorithm. This change moves the mention of `EfficientLengthIterable` from the public types to an anonymously named private type, and ensures that the private type is never the result of a least-upper-bound computation, by adding another interface with the same depth that all the public types implementing `EfficientLengthIterable` also implement. (A longer term solution to `EfficientLengthIterable` looking like it's a public name could be combining the collection- related code from `dart:collection`, `dart:core` and `dart:_internal` into a single `dart:_collection_impl`, and exporting the relevant types from there. Then we could make the interface be `_EfficientLengthIterable` again.) Change-Id: I717743f0ca253782162be0ad9ff05036fdf57159 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/322320 Reviewed-by: Nate Bosch <nbosch@google.com> Reviewed-by: Slava Egorov <vegorov@google.com> Reviewed-by: Aske Simon Christensen <askesc@google.com> Reviewed-by: Stephen Adams <sra@google.com> Commit-Queue: Lasse Nielsen <lrn@google.com> |
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.github | ||
benchmarks | ||
build | ||
docs | ||
pkg | ||
runtime | ||
samples | ||
sdk | ||
tests | ||
third_party | ||
tools | ||
utils | ||
.clang-format | ||
.gitattributes | ||
.gitconfig | ||
.gitignore | ||
.gn | ||
.mailmap | ||
.style.yapf | ||
.vpython | ||
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
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.