I use a few like this in some of my helper macros[0] that I usually pull into my iOS projects. [0]: https://gist.github.com/numo16/3407652 https://gist.github.

I use a few like this in some of my helper macros[0] that I usually pull into my iOS projects. [0]: https://gist.github.com/numo16/3407652 https://gist.github.com/numo16/3407652