How can I detect any text changes in a textField? The delegate method shouldChangeCharactersInRange works for something, but it did not fulfill my need exactly. Since until it returns YES, the textField texts are not available to other observer methods. e.g. in my code calculateAndUpdateTextFields did not get the updated text, the user has typed. … Read more
I’m trying to work out how to cast an Int into a String in Swift. I figure out a workaround, using NSNumber but I’d love to figure out how to do it all in Swift. let x : Int = 45 let xNSNumber = x as NSNumber let xString : String = xNSNumber.stringValue 23 s … Read more
Will Swift-based applications work on OS X 10.9 (Mavericks)/iOS 7 and lower? For example, I have a machine running OS X 10.8 (Mountain Lion), and I am wondering if an application I write in Swift will run on it. Or what should I have to create a Swift application using Mac OS? 19 s 19 I … Read more
This crash has been a blocking issue I used the following steps to reproduce the issue: Create a Cocoa Touch Framework project Add a swift file and a class Dog Build a framework for device Create a Single View application in Swift Import framework into app project Instantiate swift class from the framework in ViewController … Read more
I have an app where the UITableView‘s separator inset is set to custom values – Right 0, Left 0. This works perfectly in iOS 7.x, however in iOS 8.0 I see that the separator inset is set to the default of 15 on the right. Even though in the xib files it set to 0, … Read more
I just created a new Swift project within Xcode. I am wondering which version of Swift it’s using. How can I see, in Xcode or the terminal, what version of Swift I am using inside my project? 18 s 18 Project build settings have a block ‘Swift Compiler – Languages’, which stores information about Swift … Read more
I’m trying to create an NSTimer in Swift but I’m having some trouble. NSTimer(timeInterval: 1, target: self, selector: test(), userInfo: nil, repeats: true) test() is a function in the same class. I get an error in the editor: Could not find an overload for ‘init’ that accepts the supplied arguments When I change selector: test() … Read more
Say I have a string here: var fullName: String = “First Last” I want to split the string base on white space and assign the values to their respective variables var fullNameArr = // something like: fullName.explode(” “) var firstName: String = fullNameArr[0] var lastName: String? = fullnameArr[1] Also, sometimes users might not have a … Read more
How do you get the length of a String? For example, I have a variable defined like: var test1: String = “Scott” However, I can’t seem to find a length method on the string. 4Best Answer 41
In C/C++/Objective C you can define a macro using compiler preprocessors. Moreover, you can include/exclude some parts of code using compiler preprocessors. #ifdef DEBUG // Debug-only code #endif Is there a similar solution in Swift? 18 s 18 Yes you can do it. In Swift you can still use the “#if/#else/#endif” preprocessor macros (although more … Read more
