Kotlin 1.0 Beta 3 发布，基于 JVM 的编程语言
欢迎加入运维网交流群:263444886Kotlin 1.0 Beta 3 发布，此版本主要是要完成标准库开发，还有移除一些废弃的语言结构。同时还有一些 bug 修复，性能提升。此版本包括库，语言，IDE 和 Android 扩展方面的改进和修复。详细改进内容请看发行说明。
改进列表：
[*] Library
[*] increment deprecated in Progressions in favor of step property to Progressions, for-loops updated to refer to step
[*] contains() and other similar extensions now accept supertypes of the element of the collection
[*] Delegates.mapVal and mapVar, MapVal, MapVar, FixedMapVal, FixedMapVar are deprecated
[*] String.toCharArray() introduced instead of String.getChars(); String.toCharList() deprecated
[*] MutableCollection.removeAll(predicate: (T) -> Boolean) and similar for retainAll added
[*] sequence(initialValueFunction, nextValueFunction) doesn't evaluate first value until it's requested by sequence iterator
[*] sequenceOf(Progression) deprecated
[*] flatten operation for Sequence added
[*] Langauge
[*] No references to PropertyMetadata are generated in the byte code
[*] Suffixes to numeric literals, such as 1baz are prohibited
[*] Comma-separated conditions in when without an argument are prohibited (KT-5143)
[*]
Annotation>
[*] Arrays of annotations supported as annotation arguments (KT-10136)
[*] Generic types in catch clauses (including reified T) are prohibited (KT-9816)
[*] protected members are allowed in companion objects
[*] Calls to non-@JvmStatic protected members of companion objects from subclasses are marked as errors (unsupported)
[*] "…" is reserved as a token (KT-9708)
[*] Enum entry can not be used as a type (KT-5401)
[*] Enum.values is deprecated in favor of Enum.values()
[*] private setters are now deprecated for open properties
[*]
Local sealed>
[*] Use of uninitialized variables in lambdas / object literals / local functions is forbidden
[*] Overriding setter cannot weaken visibility
[*]
Inner>
[*] Implicit receiver smart casts are supported
[*] Older deprecations have become errors
下载：
kotlin-compiler-1.0.0-beta-3595.zip
Kotlin 是一个基于 JVM 的新的编程语言，由 JetBrains 开发。
其主要设计目标：
[*] 创建一种兼容Java的语言
[*] 让它比Java更安全，能够静态检测常见的陷阱。如：引用空指针
[*] 让它比Java更简洁，通过支持variable type inference，higher-order functions (closures)，extension functions，mixins and first-class delegation等实现。
[*] 让它比最成熟的竞争对手Scala语言更加简单。
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