编程语言Red 0.5.4发布：新datatypes、异常处理和set操作
颇具内涵的Red语言Logo
Red是一种可以运行于多种平台的全栈语言，它的语法主要继承于Rebol，同时在设计过程中借鉴了Scala和Lua的优点 。作为一门全栈语言，Red既可以用于高层级的编程，如DSL（Domain Specific Language），也可用于低层级的编程，如设备驱动。
更多详情请看这篇文章：《Red语言：向编程复杂性反击》
Red 0.5.4版本是一次重大的更新，带来了大量的新特性。接下来他将支持GUI，也可能会支持DSL。
图为：Red Language architecture schema
Red开始支持了一些新的datatype，包括：Pair! datatype、Percent! datatype、Tuple! datatype、Map! datatype等。
同时，它也支持了Set操作，主要有：
- union: returns the union of two data sets.
- exclude: returns the first data set less the second data set.
- intersect: returns the intersection of two data sets.
- difference: returns all the values which differ from two data sets.
- unique: returns the data set with duplicates removed.
而这些操作可以应用于这些datatypes：block!、string!、bitset!、typeset!。（注：会在下一个版本中支持 Hash! datatype）
New natives：as-pair、break、continue、extend。
New action：put。（注：PUT仅支持在map!中实现，其它的支持请静候未来版本）
New function：cause-error
Red/System additions：
添加New natives是为了更好地支持新的Red功能：
其它更新：
- exit/return are now defined as natives instead of volatile keywords.
- do can accept error! values.
- parse and load are now more stable when errors are raised from parsing rules.
- load errors handling greatly improved (no console exit on syntax errors anymore).
- value? now supports any type, except unset! as argument.
- fixed bugs and little improvement of help output.
- minor Redbin speed and generated payload size improvement.
- prin output in console fixed.
- fixed Red/System's #get directive not working in some cases.
- system/words now defined as an object!.
- compiler now supports system/words/ prefix to access global context words.
- many fixes and improvements on vector! datatype, especially on math operations.
- color definitions are now available.
- vector! unit tests significantly extended.
- an op! used without arguments in the interpreter now reports an error.
- pick and poke now accept a logic! value as index.
- added missing comparison operators for vector!.
- paths evaluation errors in interpreter are now more accurate.
- first memory frame allocation increased from 512KB to 1MB.
- fixed memory corruptions caused by function with refinements in interpreter.
- division by zero now properly caught for floats.
- last but not least, 44 bugs reported on Github's tracker fixed in this release!
项目迁移至Gitter
Red团队认为Gitter虽然年轻，但前途不可限量，所以已经将项目迁移至了Gitter，用GitHub账户也可直接登录，你可以去这里和他们沟通交流：https://gitter.im/red/red
下一步
这次发布标志着在master重新集成Android分支的开始。另外，Red团队称将在0.6.0中支持GUI引擎和GUI DSL，不过Android back-end不在下个版本的计划中。此外，由于Android的开发周期很慢和调试选项的限制，所以Windows会成为GUI的第一个支持平台，可 快速完成引擎和DSL。最后，在0.6.1中将会合并Android GUI back-end和toolchain。
下载地址：http://www.red-lang.org/p/download.html
发布日志：http://www.red-lang.org/2015/06/054-new-datatypes-exceptions-and-set.html