diff options
Diffstat (limited to 'android/util_test.go')
-rw-r--r-- | android/util_test.go | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/android/util_test.go b/android/util_test.go index 1c791b24..2e5eb07e 100644 --- a/android/util_test.go +++ b/android/util_test.go @@ -15,6 +15,7 @@ package android import ( + "fmt" "reflect" "testing" ) @@ -359,3 +360,47 @@ func TestRemoveFromList(t *testing.T) { }) } } + +func ExampleCopyOf() { + a := []string{"1", "2", "3"} + b := CopyOf(a) + a[0] = "-1" + fmt.Printf("a = %q\n", a) + fmt.Printf("b = %q\n", b) + + // Output: + // a = ["-1" "2" "3"] + // b = ["1" "2" "3"] +} + +func ExampleCopyOf_append() { + a := make([]string, 1, 2) + a[0] = "foo" + + fmt.Println("Without CopyOf:") + b := append(a, "bar") + c := append(a, "baz") + fmt.Printf("a = %q\n", a) + fmt.Printf("b = %q\n", b) + fmt.Printf("c = %q\n", c) + + a = make([]string, 1, 2) + a[0] = "foo" + + fmt.Println("With CopyOf:") + b = append(CopyOf(a), "bar") + c = append(CopyOf(a), "baz") + fmt.Printf("a = %q\n", a) + fmt.Printf("b = %q\n", b) + fmt.Printf("c = %q\n", c) + + // Output: + // Without CopyOf: + // a = ["foo"] + // b = ["foo" "baz"] + // c = ["foo" "baz"] + // With CopyOf: + // a = ["foo"] + // b = ["foo" "bar"] + // c = ["foo" "baz"] +} |