swift Archives - Page 4 of 8

Swift has: Strong References Weak References Unowned References How is an unowned reference different from a weak reference? When is it safe to ...

I have a simple Dictionary which is defined like: var dict : NSDictionary =...

I am defining a custom error type with Swift 3 syntax and I want to provide a user-friendly description of the error which ...

I have not yet been able to figure out how to get a substring of a String in Swift: var str = “Hello, ...

I’m using Core Data with Cloud Kit, and have therefore to check the iCloud user status during application startup. In case of problems ...

From Apple’s documentation: You can use if and let together to work with values that might be missing. These values are represented as ...

Whenever I try to run my app in Xcode 6 Beta 4 I am getting the error: The file "MyApp.app" couldn't be opened ...

Swift has a property declaration syntax very similar to C#’s: var foo: Int { get { return getFoo() } set { setFoo(newValue) } ...

I have an array that is made up of AnyObject. I want to iterate over it, and find all elements that are array ...

Been encountering this error a lot in my OS X using swift: “This application is modifying the autolayout engine from a background thread, ...