Exercise2

I like the idea of grouping all this data in a TwitterEntry. You might consider using a struct rather than a class. As I understand it, structs offer all the same things as classes (properties, methods, initializers, etc.) - but don't offer the option of inheritance. If you're going for more functional code, making this a struct and changing the properties to constants instead of variables should get you closer. Further reading:

https://developer.apple.com/library/prerelease/mac/documentation/Swift/Conceptual/Swift_Programming_Language/ClassesAndStructures.html

Chris Eidhof talks about Parsing JSON in Swift and uses a struct to define his Blog type: http://chris.eidhof.nl/posts/json-parsing-in-swift.html