Discordでわちゃわちゃしてたやつ

InvalidURLInCodableWorkaround.swift

let data: Data = """
{
"id": 1,
"url": ""
}
""".data(using: .utf8)!

struct Hoge: Codable {
    let id: Int
    private let jsonUrl: String?
}
 
extension Hoge {
    enum CodingKeys: String, CodingKey {
        case id
        case jsonUrl = "url"
    }
}

extension Hoge {
    var url: URL? {
        guard let string = jsonUrl else { return nil }
        return URL(string: string)
    }
}

let decoder = JSONDecoder()
let hoge = try! decoder.decode(Hoge.self, from: data)