func testCopy() {
test1 := []int{1, 2, 3, 4, 5}
test2 := test1
test1 = test1[0:0]
for i, v := range test2 {
if i == 0 {
test1 = append(test1, 7, 8, 9, 10, 11)
}
fmt.Println(v)
}
fmt.Printf("%p\n", test1)
fmt.Printf("%p\n", test2)
}
这段代码的输出如下:
1
8
9
10
11
0x14000016210
0x1400001621
请谨慎的使用浅拷贝,在不发生扩容的情况下也危险的很呐