CodingKeyRepresentable

A type that can be converted to and from a coding key.

iOS
15.4+
macOS
12.3+
tvOS
15.4+
watchOS
8.5+
protocol CodingKeyRepresentable
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With a CodingKeyRepresentable type, you can losslessly convert between a custom type and a CodingKey type.

Conforming a type to CodingKeyRepresentable lets you opt in to encoding and decoding Dictionary values keyed by the conforming type to and from a keyed container, rather than encoding and decoding the dictionary as an unkeyed container of alternating key-value pairs.