tl;dr Swift 1.0 is now as fast as C by this benchmark using the default release optimisation level [-O]. Here is an in-place quicksort in Swift Beta: func quicksort_swift(inout a:CInt[], start:Int, end:Int) { if (end – start < 2){ return } var p = a[start + (end – start)/2] var l = start var r … Read more
You can use // MARK: There has also been discussion that liberal use of class extensions might be a better practice anyway. Since extensions can implement protocols, you can e.g. put all of your table view delegate methods in an extension and group your code at a more semantic level than #pragma mark is capable … Read more
Set the UIViewControllerBasedStatusBarAppearance to YES in the .plist file. In the viewDidLoad do a [self setNeedsStatusBarAppearanceUpdate]; Add the following method: – (UIStatusBarStyle)preferredStatusBarStyle { return UIStatusBarStyleLightContent; } Note: This does not work for controllers inside UINavigationController, please see Tyson’s comment below 🙂 Swift 3 – This will work controllers inside UINavigationController. Add this code inside your … Read more
Using Objective-C Classes in Swift If you have an existing class that you’d like to use, perform Step 2 and then skip to Step 5. (For some cases, I had to add an explicit #import <Foundation/Foundation.h to an older Objective-C File.) Step 1: Add Objective-C Implementation — .m Add a .m file to your class, … Read more
This question seems to be very popular here on Stack Overflow so I thought I would try and give a better answer to help out people starting in the world of iOS like me. Passing Data Forward Passing data forward to a view controller from another view controller. You would use this method if you wanted … Read more