0
我有这样的代码在夫特以产生从一个十六进制码的RGB值2.0夫特:类型的值(_) - >不具有成员“发电机”
class func colorWithHex(hexString: String?, alpha: CGFloat) -> UIColor? {
if let hexString = hexString {
var error : NSError? = nil
let regexp = try! NSRegularExpression(pattern:"\\A#[0-9a-f]{6}\\z", options: [.CaseInsensitive])
let thrange = NSMakeRange(0, count(hexString))
let thcount = regexp.numberOfMatchesInString(hexString, options: .ReportProgress, range: thrange)
if thcount != 1 {
return nil
}
var rgbValue : UInt32 = 0
let scanner = NSScanner(string: hexString)
scanner.scanLocation = 1
scanner.scanHexInt(&rgbValue)
let red = CGFloat((rgbValue & 0xFF0000) >> 16)/255.0
let green = CGFloat((rgbValue & 0xFF00) >> 8)/255.0
let blue = CGFloat((rgbValue & 0xFF))/255.0
return UIColor(red: red, green: green, blue: blue, alpha: alpha)
}
然而,它的抛出错误,我认为这可能是因为代码是为Swift1.2编写的,但我不太了解Swift语言,但尚未解析此错误试图告诉我的内容。
该行let thrange = NSMakeRange(0, count(hexString))
在count(hexString)
上抛出一个错误,说value of type '(_)-> _'has no member 'Generator'
这是什么意思?