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swift - Read and write a String from text file - Stack Overflow I need to read and write data to from a text file, but I haven't been able to figure out how I found this sample code in the Swift's iBook, but I still don't know how to write or read data import
Split a String into an array in Swift? - Stack Overflow Split is a native Swift method introduced in Swift 4, and it returns an array of Substring values On the other hand, components are part of the NSString class and return an array of String values If you need the result as String values and are working with native Swift types, split is generally preferred If you're working with Objective-C APIs or older codebases, you might encounter components
Swift: #warning equivalent - Stack Overflow In Swift using XCode 6 you can use different kinds of landmarks for different purposes Here's what Apple says about it: Xcode now supports MARK:, TODO: and FIXME: landmarks to annotate your code and lists them in the jump bar So for setting a warning with a description you would use something like this: TODO: Clean up this code after
Get nth character of a string in Swift - Stack Overflow The swift string class does not provide the ability to get a character at a specific index because of its native support for UTF characters The variable length of a UTF character in memory makes jumping directly to a character impossible
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 an if statement
Detect current device with UI_USER_INTERFACE_IDIOM() in Swift As Tony mentioned in one of the answers below, UI_USER_INTERFACE_IDIOM in Swift apps crashes when the app is deployed via TestFlight Strangely, it works when the app is uploaded directly to device from X-Code