Kotlin懒加载

BetterZhang · Jun 28, 2017 · 19871a0 · 19871a0
1 parent 920d7b3
commit 19871a0
Showing 1 changed file with 19 additions and 0 deletions.
diff --git a/src/com/betterzhang/learnkotlin/kotlin/Lazy.kt b/src/com/betterzhang/learnkotlin/kotlin/Lazy.kt
@@ -0,0 +1,19 @@
+package com.betterzhang.learnkotlin.kotlin
+
+/**
+ * Created by IntelliJ IDEA.
+ * Author : Andrew Zhang
+ * Email  : betterzhang.dev@gmail.com
+ * Time   : 2017/06/28 下午 2:08
+ * Desc   : Kotlin懒加载
+ */
+
+val lazyValue: String by lazy {
+    println("init")     // 第一次使用时才被初始化
+    "Hello Kotlin"
+}
+
+fun main(args: Array<String>) {
+    println(lazyValue)
+    println(lazyValue)
+}