Go Tutorial: Slice example - Always passed by reference

slice_example.go

func TestHello(t *testing.T) {
	fmt.Println(">> Slice example - Always passed by reference")
	testcase1 := []struct {
		arg  string
		want string
	}{
		{"original arg val", "original want val"},
	}
	fmt.Println(">> testcase1.arg:", testcase1[0].arg)
	testcase2 := testcase1
	testcase1[0].arg = "changed arg val"
	fmt.Println(">> testcase2.arg:", testcase2[0].arg)
}

// Output:
>> Slice example - Always passed by reference
>> testcase1.arg: original arg val
>> testcase2.arg: changed arg val