kotlin: 用to创建键值对

一，代码：

        //处理按钮点击事件
        binding.button.setOnClickListener {
            val p = 3
            val token = "thistokenname"
            val params = mutableMapOf<String, Any>(
                "p" to p,
                "count" to 20,
                "token" to token
            )
            println(params)
            params["token"] = "村长王富贵"
            println(params)
            params["address"] = "铁岭市象牙山村"
            println(params)
            params.remove("address")
            println(params)
        }

二，测试效果: