• Bi Xue's avatar
    Make FunctionRef support bool operator · 42f55fa5
    Bi Xue authored
    Summary:
    To support following code:
    ```
    void foo(folly::FunctionRef<void(void)> callback = {}) {
      if (callback) {
        callback();
      }
    }
    ```
    
    Reviewed By: yfeldblum
    
    Differential Revision: D4372296
    
    fbshipit-source-id: 7d21e6a44b6f6b046b424f0139465511dbae7b8b
    42f55fa5
Function.h 27.3 KB