Tag: optionals

A Swift Tutorial for Working with Classes Part 3: Abstract classes.

In the first tutorial in this series we introduced classes. In  the second we did some more advanced manipulations of classes. In both, we discussed the idea of inheritance, which has one final possibility: a class whose only purpose is to define other classes….

The Joys of Beta Swift: More with Optionals and the “does not have a member named” error

We’ve had another change to the Swift compiler that was brought to my attention by an astute reader. I was aware of it, and you’ll notice I even used it in the last few posts, but I really should have warned people about it,…

The Swift Swift Tutorial: Ten Points for Using Optionals.

In the first month and a half of using Swift, I could argue the optional value is the most difficult new concept. It isn’t hard, just something different to wrap one’s head around. That Apple’s documentation peppers information about optionals in two different e-books…