Kotlin 1.1-M02 （Early Access Preview）发布了，这是 Kotlin 1.1 的第二个里程碑版本，也带来了大量更新。这个版本带来了让人期待已久的新语言特性，在 lambdas 表达式中的解构，同时还有许多基于 1.1-M1 的新特性改进。部分更新如下：
语言特性
用于 lambdas 表达式的解构 (proposal)
Current limitations:
Nested destructuring is not supported
Destructuring in named functions/constructors is not supported
Is not supported for JS target
编译器
Smart cast enhancements
KT-2127 Smart cast receiver to not null after a not null safe call
KT-6840 Make data flow information the same for assigned and assignee
KT-13426 Fix exception when smartcast on both dispatch & extension receiver
Bound references related issues
KT-12995 Do not skip generation of the left-hand side for intrinsic bound references and class literals
KT-13075 Fix codegen for bound class reference
KT-13110 Fix type mismatch error on class literal with integer receiver expression
KT-13172 Report error on "this::class" in super constructor call
KT-13271 Fix incorrect unsupported error on synthetic extension call on LHS of ::
KT-13367 Inline bound callable reference if it's used only as a lambda
Coroutines related issues
KT-13156 Do not execute last Unit-typed coroutine statement twice
KT-13246 Fix VerifyError with coroutines on Dalvik
KT-13289 Fix VerifyError with coroutines: Bad type on operand stack
KT-13409 Fix generic variable spilling with coroutines
KT-13531 Fix ClassCastException when coercion to Unit interacts with generic await() and coroutines
Prohibit Continuation<*> as a last parameter of suspend functions
KT-13560 Prohibit non-Unit suspend functions
Typealises related issues
KT-13200 Fix incorrect number of required type arguments reported on typealias
KT-13181 Fix unresolved reference for a type alias from a different module
KT-13161 Support java static methods calls with typealiases
KT-13835 Do not lose nullability information while expanding type alias in projection position
KT-13422 Prohibit usage of type alias to exception class as an object in 'throw' expression
KT-13735 Fix NoSuchMethodError for generic typealias access
KT-13513 Support SAM constructors for aliased java functional types
KT-13822 Fix exception for start-projection of a type alias
KT-14071 Prohibit using type alias as a qualifier for super
KT-14282 Report error on unused type alias with -language-version 1.0
KT-14274 Fix type alias resolution when it's used for supertype constructor call
JDK dependent built-in classes related issues
KT-13209 Change first parameter's type of Map.getOrDefault to K instead of Any
KT-13069 Do not emit invalid DefaultImpls delegation when interface extends MutableMap with JDK8
data classes and inheritance
KT-11306 Allow data classes to implement equals/hashCode/toString from base classes
Various JVM code generation issues
KT-13182 Fix compiler internal error at inline
KT-13757 Prohibit referencing nested classes by name with $
KT-12985 Do not create range instances for 'for' loop in CharSequence.indices
KT-13931 Optimize generated code for IntRange#contains
Various analysis & diagnostic issues
KT-435 Use parameter names in error messages when calling a function-valued expression
KT-10001 Fix false unnecessary non-null assertion on a pair element
KT-12811 Treat function declaration as final if it is a member of a final class
KT-13961 Report REDECLARATION on private-in-file 'foo' vs public 'foo' in different file
软件详情：https://github.com/JetBrains/kotlin/blob/1.1-M2/ChangeLog.md
下载地址：https://github.com/JetBrains/kotlin/archive/build-1.1-M02.zip
来自:开源中国社区
