Programmatically check whether an app is installed

Question

I would like to know whether there is a Swift equivalent of the following Objective-C code

NSURL *appURL = [NSURL URLWithString: @"myapp://"];
if ([app canOpenURL: appURL] {
 NSLog(@"The app is this URL Scheme is installed on the device");
}

Answer 1

Before reading this answer you must solemnly swear not to do any of the activities on the page you linked to. (Looking for dating apps? Seriously?)

The method is essentially the same:

if let appURL = NSURL(string: "myapp://test/url/") {
    let canOpen = UIApplication.sharedApplication().canOpenURL(appURL)
    println("Can open \"\(appURL)\": \(canOpen)")
}