Надоело использовать URL(string: «url»)! для статических URL? Приведите URL в соответствие с ExpressibleByStringLiteral, и вы можете просто использовать «url».
extension URL: ExpressibleByStringLiteral { // By using 'StaticString' we disable string interpolation, for safety public init(stringLiteral value: StaticString) { self = URL(string: "\(value)").require(hint: "Invalid URL string literal: \(value)") } } // We can now define URLs using static string literals 🎉 let url: URL = "https://www.swiftbysundell.com" let task = URLSession.shared.dataTask(with: "https://www.swiftbysundell.com") // In Swift 3 or earlier, you also have to implement 2 additional initializers extension URL { public init(extendedGraphemeClusterLiteral value: StaticString) { self.init(stringLiteral: value) } public init(unicodeScalarLiteral value: StaticString) { self.init(stringLiteral: value) } }