目录
概述
隐式转换:偷偷的(隐式)对现有功能进行增强(转换)
实践
代码
scala
package com.fun.scala
import java.io.File
import scala.io.Source
object ImplicitApp {
def main(args: Array[String]): Unit = {
// implicit 2 = to 等价 :定义隐式转换函数
// implicit def a2B(a:A):B =new B(a.)
implicit def man2SuperMan(man: Man): SuperMan = new SuperMan(man.name)
val man = new Man("测试")
man.fly()
implicit def file2RichFile(file: File) = new RichFile(file)
val file = new File("data/wc.data")
println(file.read())
}
}
class Man(val name: String)
class SuperMan(val name: String) {
def fly(): Unit = {
println(s"$name fly ...")
}
}
/**
* 隐式转换 常用命名:RichXxx
*/
class RichFile(val file: File) {
def read() = Source.fromFile(file.getPath, "utf-8").mkString
}
执行结果
结束
scala隐式转换 至此结束。