(iOS) Generic tableview datasource

GenericTableViewDatasource.swift

//Variation of this feature: https://www.swiftbysundell.com/posts/reusable-data-sources-in-swift

import UIKit

/// Keep a strong reference to this, since UITableView only uses a weak reference for it. Used only for simple table views fast rendering.
class TableViewCommonCellDataSource<Model>: NSObject, UITableViewDataSource {

    /// Cell configuration
    typealias CellConfigurator = (Model, UITableViewCell) -> Void
    
    var models: [Model]
    
    private let reuseIdentifier: String
    private let cellConfigurator: CellConfigurator
    
    init(models: [Model], reuseIdentifier: String, cellConfigurator: @escaping CellConfigurator) {
        
        self.models = models
        self.reuseIdentifier = reuseIdentifier
        self.cellConfigurator = cellConfigurator
    }
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return models.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        
        let model = models[indexPath.row]
        let cell = tableView.dequeueReusableCell(withIdentifier: reuseIdentifier, for: indexPath)
        
        //Run cell setup here, taken by the closure in the initializer.
        cellConfigurator(model, cell)
        
        return cell
    }
}

SimpleExample.swift

func messagesDidLoad(_ messages: [Message]) {
    let dataSource = TableViewDataSource(
        models: messages,
        reuseIdentifier: "message"
    ) { message, cell in
        cell.textLabel?.text = message.title
        cell.detailTextLabel?.text = message.preview
    }

    // We also need to keep a strong reference to the data source,
    // since UITableView only uses a weak reference for it.
    self.dataSource = dataSource
    tableView.dataSource = dataSource
}

SpecificModelExample.swift

extension TableViewDataSource where Model == Message {
    static func make(for messages: [Message],
                     reuseIdentifier: String = "message") -> TableViewDataSource {
        return TableViewDataSource(
            models: messages,
            reuseIdentifier: reuseIdentifier
        ) { (message, cell) in
            cell.textLabel?.text = message.title
            cell.detailTextLabel?.text = message.preview
        }
    }
}