Wren是一种小型，快速，基于类的并发脚本语言 将Smalltalk放在一个Lua大小的程序包中，并加上一点Erlang并用熟悉的现代包裹起来。 System . print ( "Hello, world!" ) class Wren { flyTo (city) { System . print ( "Flying to %(city)" ) } } var adjectives = Fiber . new { [ "small" , "clean" , "fast"