New feature include: expression closures, generator expressions, and native JSON encoding and decoding.
新特性包括：表达式闭包(expression closures)、生成器表达式(generator expressions)和本地的JSON编码及解码。
Expression closures are a shorthand method of defining simple functions that mimics lambda notation.
表达式闭包是定义简单函数的一种便捷方式，用来模仿lambda符号。
Expression closures are a shorthand method of defining simple functions that mimics lambda notation.
表达式闭包是定义简单函数的一种便捷方式，用来模仿lambda符号。
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