在OOP中，什么是转发，它与委派有什么不同？ [英] In OOP, what is forwarding and how is it different from delegation?

问题描述

有人可以解释转发和委派之间的区别吗？它们看起来很相似，但是我无法找到正确的转发定义，所以我不确定我是否真正理解。

Would someone please explain the difference between forwarding and delegation? They seem similar, but I haven't been able to find a good definition of forwarding, so I'm not sure I really understand.

推荐答案

首先定义两个术语：

• 发件人：将消息/任务发送到另一个对象（接收者）


• 接收者：接收一个对象的对象发件人的邮件/任务

• sender : the object that sends a message/task to another object(the receiver)
• receiver: the object that receives a message/task from the sender

转发和委托是在转发 中，接收者在自己的上下文中起作用而在委托 <$ c中$ c>接收者代表发送者行事。

这里是这个博客文章：

授权和转发都非常相似。一个可能有助于区分他们的比喻是考虑收到一封电子邮件，要求您向有价值的慈善机构捐款。

Delegation and forwarding are both very similar. One metaphor that might help distinguish them is to think of receiving an email asking you to donate some money to a worthy charity.

• 如果您转发给朋友的电子邮件，然后朋友捐赠了钱，朋友正在捐赠自己的钱并获得了自己的税收收据。


• 如果您委托回复您的会计师，则会计师将您的钱捐赠给慈善机构，您会收到税收收据。

• If you forward the email to a friend, and the friend donates money, the friend is donating their own money and getting their own tax receipt.
• If you delegate responding to your accountant, the accountant donates your money to the charity and you receive the tax receipt.

这篇关于在OOP中，什么是转发，它与委派有什么不同？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！