Representing pointer values as emoji can be useful for "visually" debugging certain issues, like cell reuse, etc.

console.txt

DEBUG: populating cell 0x00007fa2ec02e800 🏢
DEBUG: populating cell 0x00007fa2ec018a00 🌥
DEBUG: populating cell 0x00007fa2eb005000 🎒
DEBUG: populating cell 0x00007fa2ec018a00 🌥
DEBUG: populating cell 0x00007fa2ec02e800 🏢
DEBUG: populating cell 0x00007fa2ec032c00 🌩
DEBUG: populating cell 0x00007fa2ec030600 🏂
DEBUG: populating cell 0x00007fa2ec033200 🎃
DEBUG: populating cell 0x00007fa2e98b2000 🍜
DEBUG: populating cell 0x00007fa2e9815600 🍢
DEBUG: populating cell 0x00007fa2e98b3000 🍛
DEBUG: populating cell 0x00007fa2e98b3600 🎵
DEBUG: populating cell 0x00007fa2e9883000 🎋
DEBUG: populating cell 0x00007fa2e9883600 🏥
DEBUG: populating cell 0x00007fa2e9881000 🎍
DEBUG: populating cell 0x00007fa2e9883600 🏥
DEBUG: populating cell 0x00007fa2e9883000 🎋
DEBUG: populating cell 0x00007fa2e98b3600 🎵
DEBUG: populating cell 0x00007fa2e9815600 🍢
DEBUG: populating cell 0x00007fa2e98b3000 🍛
DEBUG: populating cell 0x00007fa2e98b2000 🍜
DEBUG: populating cell 0x00007fa2ec033200 🎃
DEBUG: populating cell 0x00007fa2ec030600 🏂
DEBUG: populating cell 0x00007fa2ec032c00 🌩
DEBUG: populating cell 0x00007fa2ec02e800 🏢
DEBUG: populating cell 0x00007fa2ec018a00 🌥

EmojiPointersDemo.swift

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

        let window = UIWindow(frame: UIScreen.main.bounds)
        window.makeKeyAndVisible()
        window.rootViewController = ViewController()
        self.window = window

        return true
    }
}

class ViewController: UITableViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        self.tableView.register(UITableViewCell.self, forCellReuseIdentifier: "\(UITableViewCell.self)")
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "\(UITableViewCell.self)", for: indexPath)
        print("DEBUG: populating cell \(cell.asPointer) \(cell.asPointer.asEmoji)")
        cell.textLabel?.text = "\(indexPath) \(cell.asPointer.asEmoji)"
        return cell
    }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return 100
    }
}

extension NSObject {
    public var asPointer: UnsafeMutableRawPointer {
        return Unmanaged.passUnretained(self).toOpaque()
    }
}

extension UnsafeMutableRawPointer {
    public var asEmoji: String {
        // Adapted from https://gist.github.com/iandundas/59303ab6fd443b5eec39
        // Tweak the range to your liking.
        //let range = 0x1F600...0x1F64F
        let range = 0x1F300...0x1F3F0
        let index = (self.hashValue % range.count)
        let ord = range.lowerBound + index
        guard let scalar = UnicodeScalar(ord) else {
            return "❓"
        }
        return String(scalar)
    }
}

cool

Update: here is a version which uses multiple ranges of emoji literals (emoji's aren't contiguously allotted):

extension NSObject {
    public var asPointer: UnsafeMutableRawPointer {
        return Unmanaged.passUnretained(self).toOpaque()
    }
}


fileprivate let contiguousEmoji: [UnicodeScalar] = {
    let ranges: [ClosedRange<Int>] = [
        0x1f600...0x1f64f,
        0x1f680...0x1f6c5,
        0x1f6cb...0x1f6d2,
        0x1f6e0...0x1f6e5,
        0x1f6f3...0x1f6fa,
        0x1f7e0...0x1f7eb,
        0x1f90d...0x1f93a,
        0x1f93c...0x1f945,
        0x1f947...0x1f971,
        0x1f973...0x1f976,
        0x1f97a...0x1f9a2,
        0x1f9a5...0x1f9aa,
        0x1f9ae...0x1f9ca,
        0x1f9cd...0x1f9ff,
        0x1fa70...0x1fa73,
        0x1fa78...0x1fa7a,
        0x1fa80...0x1fa82,
        0x1fa90...0x1fa95,
    ]
    
    return ranges.reduce([], +).map { return UnicodeScalar($0)! }
}()


extension UnsafeMutableRawPointer {
    public var asEmoji: String {
        // Inspired by https://gist.github.com/iandundas/59303ab6fd443b5eec39
        let index = abs(self.hashValue) % contiguousEmoji.count
        return String(contiguousEmoji[index])
    }
}