kotlin高阶函数（一定要理解）--文章收集

Kotlin 高阶函数详解 - 知乎 (zhihu.com)
Kotlin inline noinline crossinline 解答 - 掘金 (juejin.cn)

调用代码

fun main() {
    println("===================oneParam")
    fun_oneParam(){
        println("3")
        println(wxId)
    }

    println("===================twoParam")

    fun_twoParam(listener = {name, isMan ->

        println("name="+name  +" ;isMan="+isMan)
    })



}


fun fun_oneParam(block:UserAvatar22.()->Unit){//只有一个参数
    println("===1")
    block.invoke(UserAvatar22("id","avatar"))
    println("===2")
}

fun fun_twoParam(listener:(name: String,isMan:Boolean)->Unit){//2个参数
    println("1----fun_twoParam")
    listener.invoke("name",false)
    println("2----fun_twoParam")
}

data class UserAvatar22(val wxId: String,val avatar: String)

运行结果

===================oneParam
===1
3
id
===2
===================twoParam
1----fun_twoParam
name=name ;isMan=false
2----fun_twoParam