Set and get selected enum case from a `UISegmentedControl` without relying on indexes or strings.

EnumeratedSegmentedControl.swift

import UIKit

protocol Segmentable: RawRepresentable & CaseIterable { }

class EnumeratedSegmentedControl<T: Segmentable>: UISegmentedControl where T.RawValue == String {
	convenience init() {
		let items = T.allCases.map { $0.rawValue }

		self.init(items: items)
	}

	var selectedSegment: T? {
		get {
			if selectedSegmentIndex == -1 { return nil }
			guard selectedSegmentIndex < T.allCases.count else { return nil }
			return Array(T.allCases)[selectedSegmentIndex]
		}
		set {
			if let newValue = newValue {
				selectedSegmentIndex = T.allCases.map({ $0.rawValue }).index(of: newValue.rawValue) ?? -1
			} else {
				selectedSegmentIndex = -1
			}
		}
	}
}