[mhogomchungu]

Your code failed to compile but this one[1] succeeds. Side effect of your way is that it now makes the project requiring C++14 but i can live with that.

[1] https://github.com/mhogomchungu/tasks/blob/4210a8fad57958fad...

[arximboldi]

You can change the `std::result_of_t<...>` for `typename std::result_of<...>::type` to make it work in C++11 :)

[mhogomchungu]

All my projects are C++14 so it wasnt an issue for me but i liked being c++11 for other people and i am glad there is a way to get it back to c++11. Already committed your suggestion.

Thank you very much.