Swift 2.2 formally deprecates the ++
and --
operators, which means they still work but you'll get a warning when you use them. Deprecation is usually a first step towards removing something entirely, and in this case both of these operators will be removed in Swift 3.0.
In their place, you need to use += 1
and -= 1
instead. These operators have been there all along, and are not going away.
You might wonder why two long-standing operators are being removed, particularly when they exist in C, C#, Java, and – critically to its "joke" – C++. There are several answers, not least:
++
rather than += 1
is hardly a dramatic time saving++
doesn't have an obvious meaning to people learning Swift, whereas +=
at least reads as "add and assign."++
and --
were used – have also been deprecated, which brings me on to my next point…SAVE 50% To celebrate WWDC23, all our books and bundles are half price, so you can take your Swift knowledge further without spending big! Get the Swift Power Pack to build your iOS career faster, get the Swift Platform Pack to builds apps for macOS, watchOS, and beyond, or get the Swift Plus Pack to learn advanced design patterns, testing skills, and more.
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