A type that can be used as a key for encoding and decoding.
SDK
- Xcode 9.0+
Framework
- Swift Standard Library
Declaration
protocol CodingKey
ProtocolCoding
CodingKey
Topics
Initializers
init?(intValue : Int)Creates a new instance from the specified integer.
Required.
init?(stringValue : String)Creates a new instance from the given string.
Required.
Instance Properties
var intValue : Int?The value to use in an integer-indexed collection (e.g. an int-keyed dictionary).
Required.
var stringValue : StringThe string to use in a named collection (e.g. a string-keyed dictionary).
Required.
Relationships
Inherits From
See Also
Custom Encoding and Decoding
Encoding and Decoding Custom Types
Make your data types encodable and decodable for compatibility with external representations such as JSON.
typealias CodableA type that can convert itself into and out of an external representation.
protocol EncodableA type that can encode itself to an external representation.
protocol DecodableA type that can decode itself from an external representation.
struct CodingUserInfoKey A user-defined key for providing context during encoding and decoding.