From a6b328cd99eaafe10e1c954b2caaa8df453183d4 Mon Sep 17 00:00:00 2001
From: Shikong <919411476@qq.com>
Date: Tue, 21 Sep 2021 14:05:38 +0800
Subject: [PATCH] =?UTF-8?q?docs:=20Closure=20Function=20=E9=97=AD=E5=8C=85?=
 =?UTF-8?q?=E5=87=BD=E6=95=B0?=
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---
 base/function/closure/main.go | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 base/function/closure/main.go

diff --git a/base/function/closure/main.go b/base/function/closure/main.go
new file mode 100644
index 0000000..7aac051
--- /dev/null
+++ b/base/function/closure/main.go
@@ -0,0 +1,26 @@
+package main
+
+import "fmt"
+
+// 闭包函数
+// 闭包函数中 包含了 其外部作用域 的 变量
+//
+// 底层原理
+// 1. 函数返回值
+// 2. 变量查找顺序
+func closure(x int) func(int) int {
+	return func(i int) int {
+		x += i
+		return x
+	}
+}
+
+func main() {
+	f1 := closure(0)
+
+	i := f1(1)
+	fmt.Printf("i => %T %+v\n", i, i)
+
+	i = f1(2)
+	fmt.Printf("i => %T %+v\n", i, i)
+}