NSURL getResourceValue in swift

Question

Having trouble figuring out how to make the following call in swift:

var anyError: NSError? = nil
var rsrc: NSNumber? = nil
var success = url.getResourceValue(&a         


        

Answer 1

Here's a concrete example as an extension of the URL type:

extension URL {
    var creationDate : Date {
        let url = self as NSURL
        var value : AnyObject?
        try? url.getResourceValue(&value, forKey: .creationDateKey)
        if let date = value as? Date {
            return date
        }
        return .distantPast
    }
}

For convenience, if the call to getResourceValue() fails, it returns the value .distantPast by default. Using the try? form allows discarding the error which isn't always needed.