I attended the first
Swift Summit on 21st of March; there were two days but I only went to the first. Here are some of the facts I learned:
- Int is not a fundamental type as you would think of it in most languages.
- Instead it's a struct that derives SignedIntegerType with the actual value being an instance of the really fundamental type Bultin.World
- Being a struct means it's a proper object hence its methods, the ability to extend (see later) and can (& does )implement protocols
- Int can be extended
- As it's an object (see above) it's possible to write extensions methods.
- I have a far better understanding of what @autoclosure does now
- It basically captures the function rather than invoking it
- nil is never actually treated as nil when used
And now for some opinion about the day.
- People seem to be struggling with error handling
- A couple of talks presented code to avoid pyramids of doom in regard to making a call, checking for success/failure and if successful continuing.
- People think they're doing Functional Programming
- Just because Swift supports Functional Programming style and some people use elements of FP they assume Swift is mainly a Functional language and that they are doing Functional Programming.
- Passing functions arounds as first-class objects does not make your program functional
- Some people now hate Objective-C
