扩展函数Kotlin实现

BetterZhang · Jun 28, 2017 · 76e940f · 76e940f
1 parent 809721f
commit 76e940f
Showing 1 changed file with 24 additions and 0 deletions.
diff --git a/src/com/betterzhang/learnkotlin/kotlin/MyClass.kt b/src/com/betterzhang/learnkotlin/kotlin/MyClass.kt
@@ -0,0 +1,24 @@
+package com.betterzhang.learnkotlin.kotlin
+
+/**
+ * Created by IntelliJ IDEA.
+ * Author : Andrew Zhang
+ * Email  : betterzhang.dev@gmail.com
+ * Time   : 2017/06/28 上午 11:10
+ * Desc   : 扩展函数
+ */
+class MyClass {
+    fun foo() = println("member")
+}
+
+fun MyClass.bar() = println("extension")
+
+fun MyClass.foo() = println("extension foo")
+
+fun MyClass.foo(para: Int) = println("extension foo Int")
+
+fun main(args: Array<String>) {
+    MyClass().bar()
+    MyClass().foo()     // 扩展函数与成员函数相同时，成员函数优先
+    MyClass().foo(10)
+}