Lambda表达式语法Java、Kotlin对比实现

BetterZhang · Jun 28, 2017 · 24c4823 · 24c4823
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diff --git a/src/com/betterzhang/learnkotlin/java/Lambda.java b/src/com/betterzhang/learnkotlin/java/Lambda.java
@@ -0,0 +1,24 @@
+package com.betterzhang.learnkotlin.java;
+
+/**
+ * Created by IntelliJ IDEA.
+ * Author : Andrew Zhang
+ * Email  : betterzhang.dev@gmail.com
+ * Time   : 2017/06/28 下午 1:23
+ * Desc   : 匿名函数 ( Lambda 表达式 )
+ */
+public class Lambda {
+
+    public static void main(String[] args) {
+
+        new Thread(() -> System.out.println("Hello Java")).start();
+
+        new Thread(new Runnable() {
+            @Override
+            public void run() {
+                System.out.println("Hello Java");
+            }
+        }).start();
+    }
+
+}
diff --git a/src/com/betterzhang/learnkotlin/kotlin/Lambda.kt b/src/com/betterzhang/learnkotlin/kotlin/Lambda.kt
@@ -0,0 +1,28 @@
+package com.betterzhang.learnkotlin.kotlin
+
+/**
+ * Created by IntelliJ IDEA.
+ * Author : Andrew Zhang
+ * Email  : betterzhang.dev@gmail.com
+ * Time   : 2017/06/28 下午 1:27
+ * Desc   : description
+ */
+
+fun main(args: Array<String>) {
+
+    Thread(Runnable {
+        println("Hello Kotlin")
+    }).start()
+
+    // Kotlin Lambda 表达式语法
+    val sum = {x: Int, y: Int -> x + y}
+    val sum1: (Int, Int) -> Int = {x, y -> x + y}
+    val sum2 = fun(x: Int, y: Int): Int {
+        return x + y
+    }
+
+    println(sum(2, 8))
+    println(sum1(3, 9))
+    println(sum2(5, 12))
+
+}