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文章浏览阅读164次。一.声明变量object VaDemo { def main(args: Array[String]): Unit = { val a = 1 println(a) val b = "hello" println(b) val str:String = "world" println(str) }}二.常用类型Scala和Java一样,有7种数值类型Byte、Char、Short、Int、Long、Float和Double(无包装类型_scala val cond: (int, int) => boolean
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