[dart-misc] [dart-announce] Dart 1.21 is now available

['Michael Thomsen' via Dart Announcements]

Dart SDK version 1.21 has been released.


The *release announcement*
<http://news.dartlang.org/2016/12/dart-121-generic-method-syntax.html> and
the changelog
<https://github.com/dart-lang/sdk/blob/master/CHANGELOG.md#1210> have all of
the details!


-----


1.21.0 - 2016-12-07
<https://github.com/dart-lang/sdk/blob/master/CHANGELOG.md#language>Language

- Support generic method syntax. Type arguments are not available at
runtime. For details, check the informal specification
<https://gist.github.com/eernstg/4353d7b4f669745bed3a5423e04a453c>.
- Support access to initializing formals, e.g., the use of x to
initialize y in class C { var x, y; C(this.x): y = x; }. Please check
the informal specification
<https://gist.github.com/eernstg/cff159be9e34d5ea295d8c24b1a3e594> for
details.
- Don't warn about switch case fallthrough if the case ends in a rethrow
statement.
- Also don't warn if the entire switch case is wrapped in braces - as
long as the block ends with a break, continue, rethrow, return or throw.
- Allow = as well as : as separator for named parameter default values.

<https://github.com/dart-lang/sdk/blob/master/CHANGELOG.md#core-library-changes>Core
library changes

-

dart:core: Set.difference now takes a Set<Object> as argument.
-

dart:developer
- Added Service class.
- Allows inspecting and controlling the VM service protocol HTTP
server.
- Provides an API to access the ID of an Isolate.

<https://github.com/dart-lang/sdk/blob/master/CHANGELOG.md#tool-changes>Tool
changes

<https://github.com/dart-lang/sdk/blob/master/CHANGELOG.md#1201---2016-10-13>


-

Dart Dev Compiler
- Support calls to loadLibrary() on deferred libraries. Deferred
libraries are still loaded eagerly. (#27343)
--
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