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FlyweightPattern.swift
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FlyweightPattern.swift
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//
// FlyweightPattern.swift
// Design-Patterns
//
// Created by liupengkun on 2020/5/11.
// Copyright © 2020 刘朋坤. All rights reserved.
//
/*
享元模式(Flyweight Pattern):运用共享技术复用大量细粒度的对象,降低程序内存的占用,提高程序的性能。
UITableViewCell,UICollectionViewCell
*/
import UIKit
enum PhoneEnum:Int {
case IPhone = 0
case MIPhone = 1
case HWPhone = 2
}
class PhoneInfo: NSObject {
var phoneName: String = ""
var phoneColor: String = ""
}
class FlyweightPhoneFactory: NSObject {
var phonePools:Dictionary<String, Any> = [:]
func phoneWithType(type: PhoneEnum) -> PhoneInfo {
if (self.phonePools.keys.count <= 0) {
self.phonePools = Dictionary.init(minimumCapacity: 3)
}
let phoneInfo = self.phonePools["\(type)"]
if (phoneInfo == nil) {
let tempPhoneInfo = PhoneInfo.init()
switch type {
case .IPhone:
tempPhoneInfo.phoneColor = "红色"
tempPhoneInfo.phoneName = "苹果"
case .MIPhone:
tempPhoneInfo.phoneColor = "黑色"
tempPhoneInfo.phoneName = "小米"
case .HWPhone:
tempPhoneInfo.phoneColor = "白色"
tempPhoneInfo.phoneName = "华为"
}
self.phonePools["\(type)"] = tempPhoneInfo
return tempPhoneInfo
}
return phoneInfo as! PhoneInfo
}
func detailsType() {
let poolsArray = self.phonePools.keys
poolsArray.forEach { (key) in
print(self.phonePools["\(key)"] as Any, key)
}
}
}