静态绑定和动态绑定有什么区别? [英] What is the difference between static and dynamic binding?

问题描述

绑定时间可以分为两种:静态和动态.静态绑定和动态绑定有什么区别?

Binding times can be classified between two types: static and dynamic. What is the difference between static and dynamic binding?

您能否给出一个简短的例子来进一步说明它?

Could you give a quick example of each to further illustrate it?

推荐答案

在最笼统的术语中，静态绑定意味着引用在编译时被解析. >

In the most general terms, static binding means that references are resolved at compile time.

Animal a = new Animal();
a.Roar(); // The compiler can resolve this method call statically.

动态绑定是指在运行时 解析引用.

Dynamic binding means that references are resolved at run time.

public void MakeSomeNoise(object a) {
   // Things happen...
   ((Animal) a).Roar(); // You won't know if this works until runtime!
}

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