Xcode 5 Start to Finish: iOS and OS X Development

6. Adding a Library Target

The passer_rating function is a tremendous achievement—and hard-won. It plainly has applications beyond that simple command-line tool, so let’s encapsulate its services for use in other programs.

All right, no, you won’t, but doing so will introduce some important skills. So you can create a static library (an archive of reusable code) for passer_rating. You can move its code from the passer-rating tool into the new library and link it back into the tool.