This was originally a skeleton outline for a talk, but is evolving more towards a blog post or something. It’s aimed at people who know procedural/object-oriented programming with Cocoa, but haven’t heard anything about functional programming beyond "map is a thing apparently".

• Step by step from loops to map()
• Further exploration

Other writing about programming

• A very brief overview of how libdispatch helps with asynchronous programming, and why it's still hard
• Some thoughts on how to write less bugs, and what "Industry Best Practices" might actually be good for
• A look at how to use, and not to use, NSUserDefaults in your programs
• A Swift 3.0 playground with a simple heavily-commented hash table implementation
• A Swift 2.0 version of the hash table playground
• A Swift 3.0 playground with a very simple commented ordered set implementation
• A Swift 2.0 version of the ordered set playground
• A heavily commented Swift 2.0 implementation of the lovely Array-Deque data structure, showing copy on write, raw memory access, and other arcana
• A brief overview of tradeoffs between reference counting and tracing garbage collection
• Why dispatch_get_current_queue() often isn't what you wanted
• Different things "QA" can mean, and skills that are useful for it
• A brief 20000 foot view of CPU caches from ENIAC to modern Intel