What are the little-known features of Swift
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Consider a common situation where you want to initiate a network request and type out data without encountering any errors, so create a URLSessionDataTask, as follows:
Let task = URLSession.shared.dataTask (with: URL (string: "https://google.com")!) {(data,response, error) in guardlet datadata = data, let responseresponse = response as? HTTPURLResponse, (200..
