kotlin mutableListOf使用

Posted 2022-12-16 zhangjin1120

上篇：kotlin toMutableList使用的代码中，List接口的初始化用的是listOf。相似，MutableList接口的初始化，用的是mutableListOf

mutableListOf的几种用法示例：

fun main() 
    var list1 = mutableListOf<String>()
    var list2 = mutableListOf<String>("zhangqian","zhangjuzheng")
    var list3 = mutableListOf("zhangqian","zhangjuzheng")
    var list4 = mutableListOf(1,2,3)
    list4.removeLast()
    list4.removeLast()
    list4.removeLast()
    var list5 = list4?:mutableListOf()
    println(list5)

class MutableListOfTest 

运行结果：