| commit | author | age | ||
| 13e53a | 1 | /* |
| H | 2 | * Copyright (c) 2014, Facebook, Inc. |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * This source code is licensed under the BSD-style license found in the | |
| 6 | * LICENSE file in the root directory of this source tree. An additional grant | |
| 7 | * of patent rights can be found in the PATENTS file in the same directory. | |
| 8 | * | |
| 9 | */ | |
| 10 | ||
| 11 | #import <Foundation/Foundation.h> | |
| 12 | ||
| 13 | #pragma once | |
| 14 | ||
| 15 | /** | |
| 16 | This exists to use along with `BFTask` and `BFTaskCompletionSource`. | |
| 17 | ||
| 18 | Instead of returning a `BFTask` with no generic type, or a generic type of 'NSNull' | |
| 19 | when there is no usable result from a task, we use the type 'BFVoid', which will always have a value of `nil`. | |
| 20 | ||
| 21 | This allows you to provide a more enforced API contract to the caller, | |
| 22 | as sending any message to `BFVoid` will result in a compile time error. | |
| 23 | */ | |
| 24 | @class _BFVoid_Nonexistant; | |
| 25 | typedef _BFVoid_Nonexistant *BFVoid; | |
