小编Rav*_*kar的帖子

func getAllPropertyName(_ aClass : AnyClass) -> [String] {
    var count = UInt32()
    let properties = class_copyPropertyList(aClass, &count)
    var propertyNames = [String]()
    let intCount = Int(count)
    for i in 0 ..< intCount {
        let property : objc_property_t = properties![i]!
        guard let propertyName = NSString(utf8String:   property_getName(property)) as? String else {
            debugPrint("Couldn't unwrap property name for \(property)")
            break
        }
        propertyNames.append(propertyName)
    }
    free(properties)
    return propertyNames

这段代码一直工作到 Swift 3.2。但是我使用的是 Swift 4，它给了我一个空的 Array[String]。