## problem The storage path is: ``` lazy var filePath:String = { let path = NSSe…
## 1) With the help of Alamofire * real-time * Can be used globally * Protocol-oriented …
## 1)DispatchGroup() ``` let taskQueue = DispatchQueue.global() let taskGroup = DispatchGroup(…
## 1) Problem scenario As shown in the figure below, the yellow view is the parent view, and the…
## solution ``` extension UIImage { func isEqualToImage(_ image: UIImage) -> Bool { …
## 1) Usage scenario * Mostly used for card script verification; * Support background color…
## 1) Usage scenario * Mostly used for photo display, slide left and right to show zoom effect…
## 1) Usage scenario * Mostly used for network requests to load and rotate; * Support rotat…
## description **Usage scenario**: **macOS** framework Swift language, add third-party libraries…