仅在运行时知道键时展平JSON

仅在运行时知道键时展平JSON

基础实体：

struct BoringEntity: Decodable {    let id: String    let isActive: Bool    let age: Int    let company: String}

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解决方案1：使用没有密钥的额外结构

/// Incomplete BoringEntity version to make Decodable conformance possible.private struct BoringEntityBare: Decodable {    let isActive: Bool    let age: Int    let company: String}// Depre to aux structprivate let depred = try! JSonDeprer().depre([String : BoringEntityBare].self, from: jsonData)// Map aux entities to BoringEntitylet entities = depred.map { BoringEntity(id: 
PhantomKeys
.key, isActive: 
struct BoringEntities: Decodable {    var entities = [BoringEntity]()    // This really is just a stand-in to make the compiler happy.    // It doesn't actually do anything.    private struct PhantomKeys: CodingKey {        var intValue: Int?        var stringValue: String        init?(intValue: Int) { self.intValue = intValue; self.stringValue = "(intValue)" }        init?(stringValue: String) { self.stringValue = stringValue }    }    private enum BareKeys: String, CodingKey {        case isActive, age, company    }    init(from deprer: Deprer) throws {        let container = try deprer.container(keyedBy: PhantomKeys.self)        // There's only one key        for key in container.allKeys { let aux = try container.nestedContainer(keyedBy: BareKeys.self, forKey: key) let age = try aux.depre(Int.self, forKey: .age) let company = try aux.depre(String.self, forKey: .company) let isActive = try aux.depre(Bool.self, forKey: .isActive) let entity = BoringEntity(id: key.stringValue, isActive: isActive, age: age, company: company) entities.append(entity)        }    }}let entities = try JSonDeprer().depre(BoringEntities.self, from: jsonData).entitiesprint(entities)
.value.isActive, age: .value.age, company: .value.company) }print(entities)

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解决方案2：使用包装器

多亏了Code Different，我得以将自己的方法与他的想法结合起来，但是却无法解决：必须始终使用额外的实体。