From 125167055b319b453d2820a90256ee159c5548fa Mon Sep 17 00:00:00 2001
From: qydysky <32743305+qydysky@users.noreply.github.com>
Date: Sun, 12 Mar 2023 22:13:46 +0800
Subject: [PATCH] fix

---
 sync/Map.go      |  8 ++++++++
 sync/Map_test.go | 10 ++++++++++
 2 files changed, 18 insertions(+)

diff --git a/sync/Map.go b/sync/Map.go
index fb62b0c..7553fcf 100644
--- a/sync/Map.go
+++ b/sync/Map.go
@@ -45,3 +45,11 @@ func (t *Map) Copy() (m Map) {
 	})
 	return
 }
+
+func Copy[T comparable, S any](s map[T]S) map[T]S {
+	t := make(map[T]S)
+	for k, v := range s {
+		t[k] = v
+	}
+	return t
+}
diff --git a/sync/Map_test.go b/sync/Map_test.go
index 1457b20..a8d468f 100644
--- a/sync/Map_test.go
+++ b/sync/Map_test.go
@@ -177,6 +177,16 @@ func Test_1(t *testing.T) {
 	}
 }
 
+func Test_2(t *testing.T) {
+	var c = make(map[string]int)
+	c["1"] = 1
+	cc := Copy(c)
+	c["1"] = 2
+	if cc["1"] != 1 {
+		t.Fatal()
+	}
+}
+
 func Benchmark_customMap_Range(b *testing.B) {
 	var c Map
 	var w = &sync.WaitGroup{}
-- 
2.39.2