This Swift playground contains a series of problems to get you more familiar with Variables, Types, and Functions in Swift.
https://www.youtube.com/playlist?list=PLoN_ejT35AEjWgf6sdBBvNl6bw1g9w4gr
| Not Passing | Passing | Stretch |
|---|---|---|
| Less than 90% of problems not completed | 90%+ challenges completed | 100% challenges completed |