It's not that bad, I've stumbled across that particular article just 1 or 2 weeks ago because I wanted to check what kind of functionality of function builders

It's not that bad, I've stumbled across that particular article just 1 or 2 weeks ago because I wanted to check what kind of functionality of function builders I can use now for my DSL. It's probably more illuminating though to just try out for yourself... For example, while the article mentions "if let", does that mean "let" also works now? And yes, I wish Apple had proper and up-to-date information on this somewhere.