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@aainaj
Last active June 13, 2020 12:36
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ReferenceKeyPathEditable Protocol
enum KeyPathError: Error {
case unableToCast(String)
}
protocol ReferenceKeyPathEditable {
associatedtype Root
func update<KeyPathType>(type: Root, path: PartialKeyPath<Root>, to value: KeyPathType) throws
}
extension ReferenceKeyPathEditable {
func update<KeyPathType>(type: Root, path: PartialKeyPath<Root>, to value: KeyPathType) throws {
guard let writableKeyPath = path as? ReferenceWritableKeyPath<Root, KeyPathType> else {
throw KeyPathError.unableToCast("because of passed \(value) value data type")
}
type[keyPath: writableKeyPath] = value
}
}
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