ExampleStack demonstrates the implementation of a Goque stack.
()
| 8 | |
| 9 | // ExampleStack demonstrates the implementation of a Goque stack. |
| 10 | func Example_stack() { |
| 11 | // Open/create a stack. |
| 12 | s, err := goque.OpenStack("data_dir") |
| 13 | if err != nil { |
| 14 | fmt.Println(err) |
| 15 | return |
| 16 | } |
| 17 | defer s.Close() |
| 18 | |
| 19 | // Push an item onto the stack. |
| 20 | item, err := s.Push([]byte("item value")) |
| 21 | if err != nil { |
| 22 | fmt.Println(err) |
| 23 | return |
| 24 | } |
| 25 | |
| 26 | fmt.Println(item.ID) // 1 |
| 27 | fmt.Println(item.Key) // [0 0 0 0 0 0 0 1] |
| 28 | fmt.Println(item.Value) // [105 116 101 109 32 118 97 108 117 101] |
| 29 | fmt.Println(item.ToString()) // item value |
| 30 | |
| 31 | // Change the item value in the stack. |
| 32 | item, err = s.Update(item.ID, []byte("new item value")) |
| 33 | if err != nil { |
| 34 | fmt.Println(err) |
| 35 | return |
| 36 | } |
| 37 | |
| 38 | fmt.Println(item.ToString()) // new item value |
| 39 | |
| 40 | // Pop an item off the stack. |
| 41 | popItem, err := s.Pop() |
| 42 | if err != nil { |
| 43 | fmt.Println(err) |
| 44 | return |
| 45 | } |
| 46 | |
| 47 | fmt.Println(popItem.ToString()) // new item value |
| 48 | |
| 49 | // Delete the stack and its database. |
| 50 | s.Drop() |
| 51 | } |