なので、ちゃんとやるとこんな感じになる。 @swift-5.0.3
import Foundation #if canImport(FoundationNetworking) import FoundationNetworking #endif guard let url = URL(string: "https://discordapp.com/api/v7/gateway/bot") else { exit(1) } let task = URLSession.shared.dataTask(with: url) { dataOrNil, responseOrNil, errorOrNil in guard let response = responseOrNil as? HTTPURLResponse else { exit(1) } let allHeaderFields = response.allHeaderFields.map { (key, value) in ((key as! String).lowercased(), value) } let headers = [String: Any](allHeaderFields, uniquingKeysWith: { (lhs, rhs) in switch (lhs, rhs) { case (let lhs as [String], let rhs as [String]): return lhs + rhs case (let lhs as [String], let rhs as String): return lhs + [rhs] case (let lhs as String, let rhs as [String]): return [lhs] + rhs case (let lhs as String, let rhs as String): return [lhs, rhs] default: return rhs } }) dump(headers) exit(0) } task.resume() dispatchMain() (edited)
