Scala深入浅出进阶经典 第54讲：Scala中复合类型实战详解

package com.dt.scalaInAction.demo_054/** * Scala中复合类型实战详解 */trait Compound_Type1;trait Compound_Type2;class Compound_Type extends Compound_Type1 with Compound_Type2object Compound_Type {    //这里的方法传入的类型要求是复合类型 A with B 也就是说传入的类型即时A也是B    def compound_Type(x: Compound_Type1 with Compound_Type2) = {        println("Compound Type in global method")    }    def main(args: Array[String]): Unit = {        compound_Type(new Compound_Type1 with Compound_Type2)   //Compound Type in global method                object compound_Type_object extends Compound_Type1 with Compound_Type2        compound_Type(compound_Type_object)                     //Compound Type in global method                //采用别名定义        type compound_Type_Alias = Compound_Type1 with Compound_Type2        def compound_Type_Loacl(x: compound_Type_Alias) = println("Compound Type in local method")            val compound_Type_Class = new Compound_Type        compound_Type_Loacl(compound_Type_Class)                //Compound Type in local method                /*          *  这里定义了一个复合类型+结构类型         *  Compound_Type1 with Compound_Type2 是复合类型         *  {def init():Unit} 是定义了一个结构类型 要求传入的类型必须具有init的方法         *           *           *  type 用于定义特别复杂的类型 (比如在某些需要的情况下定义复合类型、结构类型)         */        type Scala = Compound_Type1 with Compound_Type2{def init():Unit}    }}

以上内容是从王家林老师DT大数据课程第54讲的学习笔记和个人整理。
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