Easy function to return a single image from an URL

imageURL.swift

func imageURL(URL: String) -> UIImage {
    guard let base = NSURL(string: URL),
        let data = NSData(contentsOfURL: base),
        let image = UIImage(data:data) else {
        return nil
    }
    return image
}
//USAGE EXAMPLE: imagevar.image = imageURL("http://logonoid.com/images/star-wars-logo.png")

Force unwrapping optionals is a bad idea! The URL might be invalid, so you have to return an optional UIImage or decide to throw an error. Consider something like this instead:

func imageFromURL(URL: String) -> UIImage? {
    guard let base = NSURL(string: URL),
        let data = NSData(contentsOfURL: base),
        let image = UIImage(data:data) else {
            return nil
     }

     return image
}