Enum to list example

gistfile1.txt

import SwiftUI

public enum Enum1: Int, Codable, CaseIterable, CustomStringConvertible {
    public var description: String {
        return "\(rawValue)"
    }
    case one, two, three
}

public enum Enum2: String, Codable, CaseIterable, CustomStringConvertible {
    public var description: String {
        return "\(rawValue)"
    }
    case a, b, c
}
struct ContentView: View {
    @State private var enum1 = ""
    @State private var enum2 = ""
    var body: some View {
        NavigationView {
            Form {
                Section(header: Text("Using extension")) {
                    Picker("enum1", selection: $enum1) {
                        List { Enum1.toForEach() }
                    }
                    Picker("enum2", selection: $enum2) {
                        List { Enum2.toForEach() }
                    }
                }
                Section(header: Text("Not using extension")) {
                    Picker("enum1", selection: $enum1) {
                        List { ForEach(Enum1.allCases, id: \.description) { o in Text(o.description) } }
                    }
                    Picker("enum2", selection: $enum2) {
                        List { ForEach(Enum2.allCases, id: \.description) { o in Text(o.description) } }
                    }
                }
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

extension CaseIterable where Self.AllCases: RandomAccessCollection, Self: Hashable & CustomStringConvertible {
    static func toForEach() -> some View  {
        ForEach(Self.allCases, id: \.self) { o in
            Text(o.description).tag(o)
        }
    }
}