
What is _: in Swift telling me? - Stack Overflow
2015年6月17日 · Swift needs a convention for saying what the name of a function is, including not only the function name itself (before the parentheses) but also the external names of the …
ios - Swift `in` keyword meaning? - Stack Overflow
2015年5月21日 · The question of what purpose in serves has been well-answered by other users here; in summary: in is a keyword defined in the Swift closure syntax as a separator between …
What is the "some" keyword in Swift (UI)? - Stack Overflow
2019年6月3日 · Swift 5.1 does not appear to have some as a keyword, and I don't see what else the word some could be doing there, since it goes where the type usually goes. Is there a new, …
How can I use Timer (formerly NSTimer) in Swift? - Stack Overflow
The renaming happened in Swift and other answers already have done the update...
Precision string format specifier in Swift - Stack Overflow
2014年6月5日 · surprising Swift doesn't seem to support native string formatting in print (). Although this might seem trivial, this type of solution has some efficiency concerns that it …
ios - Swift - encode URL - Stack Overflow
2014年7月3日 · 0 SWIFT 4.2 Sometimes this happened just because there is space in slug OR absence of URL encoding for parameters passing through API URL. let myString = …
How to find index of list item in Swift? - Stack Overflow
2014年6月4日 · Prior to Swift 2, there wasn't a way for generic types like collections to provide methods for the concrete types derived from them (like arrays). So, in Swift 1.x, "index of" is a …
ios - Switch statement in Swift - Stack Overflow
2014年8月13日 · Swift switch cases do not "fall through". If you want them to fall through to the code in the next case, you must explicitly use the fallthrough keyword. Every case must …
swift2 - Swift: guard let vs if let - Stack Overflow
The Swift Docs on Control Flow explain the idea behind that: Using a guard statement for requirements improves the readability of your code, compared to doing the same check with …
How does String.Index work in Swift - Stack Overflow
2016年9月24日 · It was deprecated in Swift 5 and replaced with the more explicit (String.Index (utf16Offset: l, in: s)). In my opinion this should have been a question rather than an answer e.g.