swift custom coding keys
struct Landmark: Codable {
var name: String
var foundingYear: Int
var location: Coordinate
var vantagePoints: [Coordinate]
enum CodingKeys: String, CodingKey {
case name = "title"
case foundingYear = "founding_date"
case location
case vantagePoints
}
}codable custom
struct StringBacked<Value: StringRepresentable>: Codable {
var value: Value
init(from decoder: Decoder) throws {
let container = try decoder.singleValueContainer()
let string = try container.decode(String.self)
guard let value = Value(string) else {
throw DecodingError.dataCorruptedError(
in: container,
debugDescription: """
Failed to convert an instance of \(Value.self) from "\(string)"
"""
)
}
self.value = value
}
func encode(to encoder: Encoder) throws {
var container = encoder.singleValueContainer()
try container.encode(value.description)
}
}Copyright © 2021 Codeinu
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