阿木博主一句话概括：Xojo【1】 语言中利用 Reusable【2】 对象池【3】优化实例化开销【4】
阿木博主为你简单介绍：
在软件开发中，频繁地创建和销毁对象会带来显著的性能开销。特别是在资源受限的环境中，这种开销可能会对应用程序的性能产生严重影响。Xojo 语言作为一种跨平台的开发工具，提供了丰富的类和对象创建机制。本文将探讨如何在 Xojo 中使用 Reusable 对象池技术来减少实例化开销，提高应用程序的性能。
关键词：Xojo，对象池，Reusable，性能优化【5】，实例化开销
一、
随着软件应用的日益复杂，对象的使用变得越来越频繁。在 Xojo 中，创建对象通常是通过类来实现的。频繁地创建和销毁对象会导致内存分配【6】和垃圾回收【7】的频繁发生，从而影响应用程序的性能。为了解决这个问题，我们可以采用对象池（Object Pool）技术，通过复用对象来减少实例化开销。
二、对象池的概念
对象池是一种设计模式，它通过维护一个对象池来复用对象实例，从而减少对象的创建和销毁次数。在对象池中，对象在创建后不会被销毁，而是被存储起来，当需要时可以直接从池中取出使用，使用完毕后再放回池中供后续使用。
三、Xojo 中的 Reusable 类
Xojo 提供了一个名为 Reusable 的类，它专门用于实现对象池。Reusable 类允许开发者创建一个对象池，并在需要时从池中获取对象，使用完毕后将其放回池中。
以下是一个简单的 Reusable 对象池示例：
```xojo
classid: 00000000-0000-0000-0000-000000000000
commandline:
uuid: 00000000-0000-0000-0000-000000000000
class: Reusable
super: Object
classid: 00000000-0000-0000-0000-000000000001
commandline:
uuid: 00000000-0000-0000-0000-000000000001
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000002
commandline:
uuid: 00000000-0000-0000-0000-000000000002
class: ObjectPool
super: Object
classid: 00000000-0000-0000-0000-000000000003
commandline:
uuid: 00000000-0000-0000-0000-000000000003
class: MyObjectPool
super: ObjectPool
classid: 00000000-0000-0000-0000-000000000004
commandline:
uuid: 00000000-0000-0000-0000-000000000004
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000005
commandline:
uuid: 00000000-0000-0000-0000-000000000005
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000006
commandline:
uuid: 00000000-0000-0000-0000-000000000006
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000007
commandline:
uuid: 00000000-0000-0000-0000-000000000007
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000008
commandline:
uuid: 00000000-0000-0000-0000-000000000008
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000009
commandline:
uuid: 00000000-0000-0000-0000-000000000009
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000000A
commandline:
uuid: 00000000-0000-0000-0000-00000000000A
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000000B
commandline:
uuid: 00000000-0000-0000-0000-00000000000B
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000000C
commandline:
uuid: 00000000-0000-0000-0000-00000000000C
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000000D
commandline:
uuid: 00000000-0000-0000-0000-00000000000D
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000000E
commandline:
uuid: 00000000-0000-0000-0000-00000000000E
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000000F
commandline:
uuid: 00000000-0000-0000-0000-00000000000F
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000010
commandline:
uuid: 00000000-0000-0000-0000-000000000010
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000011
commandline:
uuid: 00000000-0000-0000-0000-000000000011
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000012
commandline:
uuid: 00000000-0000-0000-0000-000000000012
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000013
commandline:
uuid: 00000000-0000-0000-0000-000000000013
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000014
commandline:
uuid: 00000000-0000-0000-0000-000000000014
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000015
commandline:
uuid: 00000000-0000-0000-0000-000000000015
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000016
commandline:
uuid: 00000000-0000-0000-0000-000000000016
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000017
commandline:
uuid: 00000000-0000-0000-0000-000000000017
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000018
commandline:
uuid: 00000000-0000-0000-0000-000000000018
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000019
commandline:
uuid: 00000000-0000-0000-0000-000000000019
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000001A
commandline:
uuid: 00000000-0000-0000-0000-00000000001A
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000001B
commandline:
uuid: 00000000-0000-0000-0000-00000000001B
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000001C
commandline:
uuid: 00000000-0000-0000-0000-00000000001C
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000001D
commandline:
uuid: 00000000-0000-0000-0000-00000000001D
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000001E
commandline:
uuid: 00000000-0000-0000-0000-00000000001E
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000001F
commandline:
uuid: 00000000-0000-0000-0000-00000000001F
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000020
commandline:
uuid: 00000000-0000-0000-0000-000000000020
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000021
commandline:
uuid: 00000000-0000-0000-0000-000000000021
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000022
commandline:
uuid: 00000000-0000-0000-0000-000000000022
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000023
commandline:
uuid: 00000000-0000-0000-0000-000000000023
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000024
commandline:
uuid: 00000000-0000-0000-0000-000000000024
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000025
commandline:
uuid: 00000000-0000-0000-0000-000000000025
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000026
commandline:
uuid: 00000000-0000-0000-0000-000000000026
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000027
commandline:
uuid: 00000000-0000-0000-0000-000000000027
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000028
commandline:
uuid: 00000000-0000-0000-0000-000000000028
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000029
commandline:
uuid: 00000000-0000-0000-0000-000000000029
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000002A
commandline:
uuid: 00000000-0000-0000-0000-00000000002A
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000002B
commandline:
uuid: 00000000-0000-0000-0000-00000000002B
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000002C
commandline:
uuid: 00000000-0000-0000-0000-00000000002C
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000002D
commandline:
uuid: 00000000-0000-0000-0000-00000000002D
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000002E
commandline:
uuid: 00000000-0000-0000-0000-00000000002E
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000002F
commandline:
uuid: 00000000-0000-0000-0000-00000000002F
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000030
commandline:
uuid: 00000000-0000-0000-0000-000000000030
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000031
commandline:
uuid: 00000000-0000-0000-0000-000000000031
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000032
commandline:
uuid: 00000000-0000-0000-0000-000000000032
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000033
commandline:
uuid: 00000000-0000-0000-0000-000000000033
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000034
commandline:
uuid: 00000000-0000-0000-0000-000000000034
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000035
commandline:
uuid: 00000000-0000-0000-0000-000000000035
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000036
commandline:
uuid: 00000000-0000-0000-0000-000000000036
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000037
commandline:
uuid: 00000000-0000-0000-0000-000000000037
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000038
commandline:
uuid: 00000000-0000-0000-0000-000000000038
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-000000000039
commandline:
uuid: 00000000-0000-0000-0000-000000000039
class: MyObject
super: Reusable
classid: 00000000-0000-0000-0000-00000000003A
commandline:
uuid: 00000000-0000-0000-0000-00000000003A
class: MyObject
Comments NOTHING