Enumerationswift 6.0.1FoundationEssentials
KeyDecodingStrategy
The strategy to use for automatically changing the value of keys before decoding.
- iOS
- 8.0+
- macOS
- 10.10+
- tvOS
- 9.0+
- watchOS
- 2.0+
enum KeyDecodingStrategyThe strategy to use for automatically changing the value of keys before decoding.
enum KeyDecodingStrategys20FoundationEssentials11JSONDecoderC19KeyDecodingStrategyO What are these?9J7KCimport FoundationEssentialsclass JSONDecoderJSONDecoder facilitates the decoding of JSON into semantic Decodable types.
case convertFromSnakeCaseConvert from “snake_case_keys” to “camelCaseKeys” before attempting to match a key with the one specified by each type.
@preconcurrency case custom(([any CodingKey]) -> any CodingKey)Provide a custom conversion from the key in the encoded JSON to the keys specified by the decoded types. The full path to the current decoding position is provided for context (in case you need to locate this key within the payload). The returned key is used in place of the last component in the coding path before decoding. If the result of the conversion is a duplicate key, then only one value will be present in the container for the type to decode from.
case useDefaultKeysUse the keys specified by each type. This is the default strategy.
init() Initializes self with default strategies.
var allowsJSON5: Bool { get set }Set to true to allow parsing of JSON5. Defaults to false.
var assumesTopLevelDictionary: Bool { get set }Set to true to assume the data is a top level Dictionary (no surrounding “{ }” required). Defaults to false. Compatible with both JSON5 and non-JSON5 mode.
var dataDecodingStrategy: JSONDecoder.DataDecodingStrategy { get set }The strategy to use in decoding binary data. Defaults to .base64.
var dateDecodingStrategy: JSONDecoder.DateDecodingStrategy { get set }The strategy to use in decoding dates. Defaults to .deferredToDate.
var keyDecodingStrategy: JSONDecoder.KeyDecodingStrategy { get set }The strategy to use for decoding keys. Defaults to .useDefaultKeys.
var nonConformingFloatDecodingStrategy: JSONDecoder.NonConformingFloatDecodingStrategy { get set }The strategy to use in decoding non-conforming numbers. Defaults to .throw.
var userInfo: [CodingUserInfoKey : Any] { get set }Contextual user-provided information for use during decoding.
func decode<T>(_ type: T.Type, from data: Data) throws -> T where T : Decodable Decodes a top-level value of the given type from the given JSON representation.
func decode<T>(_ type: T.Type, from data: Data, configuration: T.DecodingConfiguration) throws -> T where T : DecodableWithConfiguration func decode<T, C>(_ type: T.Type, from data: Data, configuration: C.Type) throws -> T where T : DecodableWithConfiguration, C : DecodingConfigurationProviding, T.DecodingConfiguration == C.DecodingConfiguration enum DataDecodingStrategyThe strategy to use for decoding Data values.
enum DateDecodingStrategyThe strategy to use for decoding Date values.
enum NonConformingFloatDecodingStrategyThe strategy to use for non-JSON-conforming floating-point values (IEEE 754 infinity and NaN).
protocol Sendable