Reusable.swift

import UIKit

// MARK: Protocol definition

/// Make your `UITableViewCell` and `UICollectionViewCell` subclasses
/// conform to this protocol when they are *not* NIB-based but only code-based
/// to be able to dequeue them in a type-safe manner
public protocol Reusable: class {
    /// The reuse identifier to use when registering and later dequeuing a reusable cell
    static var reuseIdentifier: String { get }
}

/// Make your `UITableViewCell` and `UICollectionViewCell` subclasses
/// conform to this typealias when they *are* NIB-based
/// to be able to dequeue them in a type-safe manner
public typealias NibReusable = Reusable & NibLoadable

// MARK: - Default implementation

public extension Reusable {
    /// By default, use the name of the class as String for its reuseIdentifier
    static var reuseIdentifier: String {
        return String(describing: self)
    }
}