Tusker/Tusker/CachedDictionary.swift

//
//  CachedDictionary.swift
//  Tusker
//
//  Created by Shadowfacts on 5/6/20.
//  Copyright © 2020 Shadowfacts. All rights reserved.
//

import Foundation

class CachedDictionary<Value> {
    private let name: String
    private var dict = [String: Value]()
    private let queue: DispatchQueue
    
    init(name: String) {
        self.name = name
        self.queue = DispatchQueue(label: "CachedDictionary (\(name)) Coordinator", attributes: .concurrent)
    }
    
    subscript(key: String) -> Value? {
        get {
            var result: Value? = nil
            queue.sync {
                result = dict[key]
            }
            return result
        }
        set(value) {
            queue.async(flags: .barrier) {
                self.dict[key] = value
            }
        }
    }
}