Instance Method (Default implementation)swift 6.0.3Swift
decodeIfPresent(_:forKey:)
func decodeIfPresent<T>(_ type: T.Type, forKey key: Self.Key) throws -> T? where T : Decodable func decodeIfPresent<T>(_ type: T.Type, forKey key: Self.Key) throws -> T? where T : Decodable ss30KeyedDecodingContainerProtocolPsE15decodeIfPresent_6forKeyqd__Sgqd__m_0I0QztKSeRd__lF What are these?2O9MBimport Swiftprotocol KeyedDecodingContainerProtocolA type that provides a view into a decoder’s storage and is used to hold the encoded properties of a decodable type in a keyed manner.
associatedtype Key : CodingKeyprotocol DecodableA type that can decode itself from an external representation.
func decodeIfPresent(_ type: String.Type, forKey key: Self.Key) throws -> String? Decodes a value of the given type for the given key, if present.
func decodeIfPresent(_ type: Bool.Type, forKey key: Self.Key) throws -> Bool? Decodes a value of the given type for the given key, if present.
func decodeIfPresent(_ type: Double.Type, forKey key: Self.Key) throws -> Double? Decodes a value of the given type for the given key, if present.
func decodeIfPresent(_ type: Float.Type, forKey key: Self.Key) throws -> Float? Decodes a value of the given type for the given key, if present.
func decodeIfPresent(_ type: Int.Type, forKey key: Self.Key) throws -> Int? Decodes a value of the given type for the given key, if present.
func decodeIfPresent(_ type: UInt.Type, forKey key: Self.Key) throws -> UInt? Decodes a value of the given type for the given key, if present.
func decodeIfPresent<T>(_ type: T.Type, forKey key: Self.Key) throws -> T? where T : Decodable Decodes a value of the given type for the given key, if present.
func decodeIfPresent(_ type: Int8.Type, forKey key: Self.Key) throws -> Int8? Decodes a value of the given type for the given key, if present.
func decodeIfPresent(_ type: Int16.Type, forKey key: Self.Key) throws -> Int16? Decodes a value of the given type for the given key, if present.
func decodeIfPresent(_ type: Int32.Type, forKey key: Self.Key) throws -> Int32? Decodes a value of the given type for the given key, if present.
func decodeIfPresent(_ type: Int64.Type, forKey key: Self.Key) throws -> Int64? Decodes a value of the given type for the given key, if present.
func decodeIfPresent(_ type: UInt8.Type, forKey key: Self.Key) throws -> UInt8? Decodes a value of the given type for the given key, if present.
func decodeIfPresent(_ type: Int128.Type, forKey key: Self.Key) throws -> Int128? Decodes a value of the given type for the given key, if present.
func decodeIfPresent(_ type: UInt16.Type, forKey key: Self.Key) throws -> UInt16? Decodes a value of the given type for the given key, if present.
func decodeIfPresent(_ type: UInt32.Type, forKey key: Self.Key) throws -> UInt32? Decodes a value of the given type for the given key, if present.
func decodeIfPresent(_ type: UInt64.Type, forKey key: Self.Key) throws -> UInt64? Decodes a value of the given type for the given key, if present.
func decodeIfPresent(_ type: UInt128.Type, forKey key: Self.Key) throws -> UInt128? Decodes a value of the given type for the given key, if present.
func decode(_ type: Int128.Type, forKey key: Self.Key) throws -> Int128 func decode(_ type: UInt128.Type, forKey key: Self.Key) throws -> UInt128 func decodeIfPresent(_ type: String.Type, forKey key: Self.Key) throws -> String? func decodeIfPresent(_ type: Bool.Type, forKey key: Self.Key) throws -> Bool? func decodeIfPresent(_ type: Double.Type, forKey key: Self.Key) throws -> Double? func decodeIfPresent(_ type: Float.Type, forKey key: Self.Key) throws -> Float? func decodeIfPresent(_ type: Int.Type, forKey key: Self.Key) throws -> Int? func decodeIfPresent(_ type: UInt.Type, forKey key: Self.Key) throws -> UInt? func decodeIfPresent(_ type: Int8.Type, forKey key: Self.Key) throws -> Int8? func decodeIfPresent(_ type: Int16.Type, forKey key: Self.Key) throws -> Int16? func decodeIfPresent(_ type: Int32.Type, forKey key: Self.Key) throws -> Int32? func decodeIfPresent(_ type: Int64.Type, forKey key: Self.Key) throws -> Int64? func decodeIfPresent(_ type: UInt8.Type, forKey key: Self.Key) throws -> UInt8? func decodeIfPresent(_ type: Int128.Type, forKey key: Self.Key) throws -> Int128? func decodeIfPresent(_ type: UInt16.Type, forKey key: Self.Key) throws -> UInt16? func decodeIfPresent(_ type: UInt32.Type, forKey key: Self.Key) throws -> UInt32? func decodeIfPresent(_ type: UInt64.Type, forKey key: Self.Key) throws -> UInt64? func decodeIfPresent(_ type: UInt128.Type, forKey key: Self.Key) throws -> UInt128?