This is the part where some people will start to drift off in confusion, which is a shame because it's important.
Here's are some quotes from the Swift API guidelines:
Got that? It's no surprise that Swift's rules are expressed using lingustic terminology – it is after all a language! – but this at least gives me a chance to feel smug that I did a second degree in English. What it means is that many methods are changing names in subtle and sometimes confusing ways.
Let's start with a couple of simple examples:
myArray.enumerate() myArray.enumerated() myArray.reverse() myArray.reversed()
Each time Swift 3 modifies the method by adding a "d" to the end: this is a value that's being returned.
These rules are mostly innocent enough, but it causes confusion when it comes to array sorting. Swift 2.2 used
sort() to return a sorted array, and
sortInPlace() to sort an array in place. In Swift 3.0,
sort() is renamed to
sorted() (following the examples above), and
sortInPlace() is renamed to
TL;DR: This means you need to be careful because in Swift 2.2
sort() returned a sorted array, but in Swift 3.0
sort() sorts the array in place.
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