XCode 6 Playground Measuring Code Performance

Question

Is there any quick way of evaluating the performance / runtime of a certain code part written in the new XCode 6 playground?
I want to start learning Swift by

Answer 1

I built this little tool that allows you to have performance testing in your Playground.

I'll continue to update and enhance it, but for now, it'll give you the basic ability to measure how long a function takes to run.

https://github.com/sebastienpeek/swift-performance