新闻 Crystal 0.8.0 发布，编译型的编程语言 下载

Crystal 0.8.0 发布，此版本主要改进：枚举定义问题方法；大大改进调试器支持；shards 成为官方依赖安装方法等等。

更新内容如下：

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  (breaking change) Renamed a couple of types: ChannelClosed -> Channel::ClosedError,UnbufferedChannel -> Channel::Unbuffered, BufferedChannel -> Channel::Buffered,DayOfWeek -> Time:ayOfWeek, MonthSpan -> Time::MonthSpan, TimeSpan -> Time::Span,TimeFormat -> Time::Format, EmptyEnumerable -> Enumerable::EmptyError, SocketError -> Socket::Error,MatchData -> Regex::MatchData, SignedInt -> Int::Signed, UnsignedInt -> Int::Unsigned,FileDescriptorIO -> IO::FileDescriptor, BufferedIO -> IO::Buffered, CharReader -> Char::Reader,PointerAppender -> Pointer::Appender.
  
  
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  (breaking change) All places that raised DomainError raise ArgumentError now.
  
  
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  (breaking change) Renamed Type.cast to Type.new (for example, Int32.new instead of Int32.cast)
  
  
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  (breaking change) Removed all macro instance variables except @type
  
  
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  (breaking change) Removed undef
  
  
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  (breaking change) Removed length() and count() methods from collections. The only method for this is now size.
  
  
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  (breaking change) Removed the ability to invoke methods on a union class
  
  
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  Improved debugger support
  
  
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  crystal deps now delegates to shards. Removed Projecfile support.
  
  
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  Automatically convert numeric types when invoking C functions
  
  
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  Automatically define questions methods for enum members
  
  
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  Support quotes inside quoted symbols (thanks @wolflee)
  
  
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  Allow marking initialize as private
  
  
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  Added method_added macro hook (thanks @MakeNowJust)
  
  
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  Added ArrayLiteral#includes?(obj) in macros
  
  
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  Added ASTNode#symbolize in macros (thanks @kirbyfan64)
  
  
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  Added experimental yaml_mapping
  
  
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  Added nilable variants to Enumerable#max, Enumerable#min, and others (thanks @technorama)
  
  
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  Added Iterator#flatten (thanks @jpellerin)
  
  
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  Added setting a read timeout to HTTP::Client (thanks @benoist)
  
  
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  Added Array#delete_at(index, count) and Array#delete_at(range) (thanks @tebakane)
  
  
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  Added HTTP::Cookies (thanks @netfeed)
  
  
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  Added Tuple#reverse (thanks @jhass)
  
  
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  Added Number#clamp (thanks @technorama)
  
  
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  Added serveral socket options (thanks @technorama)
  
  
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  Added WebSocket.open (thanks @kumpelblase2)
  
  
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  Added Enum.flags macro
  
  
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  Added support for sending chunked content in HTTP server (thanks @bcardiff)
  
  
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  Added future, lazy and delay concurrency methods (thanks @technorama)
  
  
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  fork now returns a Process (thanks @technorama)
  
  
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  Documented Set, and added a couple of methods (thanks @will)
  
  
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  Nicer formatting in Benchmark.ips, and interactive mode (thanks @will)
  
  
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  The -f format output is now honored in compiler errors (thanks @kirbyfan64)
  
  
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  Fixed an ambiguity with the crystal build command (thanks @MakeNowJust)
  
  
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  Cast exceptions now raise TypeCastError instead of Exception (thanks @will)
  
  
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  Many bugs fixes
  

下载：

• 
  crystal-0.8.0-1-darwin-x86_64.tar.gz
  
  
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  crystal-0.8.0-1-linux-i686.tar.gz
  
  
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  crystal-0.8.0-1-linux-x86_64.tar.gz
  
  
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  crystal-0.8.0-1.pkg
  

Crystal 是一个编译型的编程语言。特性：

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  语法类似 Ruby Ruby-inspired syntax.
  
  
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  无需指定变量类型和方法参数类型 Never have to specify the type of a variable or method argument.
  
  
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  可以调用 C 代码 Be able to call C code by writing bindings to it in Crystal.
  
  
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  编译时代码模拟和生成 Have compile-time evaluation and generation of code, to avoid boilerplate code.
  
  
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  编译成高效的本机代码 Compile to efficient native code.
  

Crystal 0.8.0 发布，编译型的编程语言下载地址