map遍历

src/senior/Collection/CollectioMap.kt

@@ -7,6 +7,9 @@ fun main(args: Array<String>) {
     m.forEach{
         println("key = ${it.key}, value = ${it.value}")
     }
+    for ((k,v) in m) {
+        println("k = $k,v = $v")
+    }
     println(m.get("a"))
     // 可变map
     var map: MutableMap<String, String> = mutableMapOf()