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Referring to enum cases with associated values as closures

Published on 03 Apr 2017
Basics article available: Enums

Just like you can refer to a Swift function as a closure, you can do the same thing with enum cases with associated values:

enum UnboxPath {
    case key(String)
    case keyPath(String)

struct UserSchema {
    static let name = key("name")
    static let age = key("age")
    static let posts = key("posts")
    private static let key = UnboxPath.key