📅 最后修改于: 2021-01-11 08:02:44 🧑 作者: Mango
有人认为功能和方法相同，并且可以互换使用这些术语。但是，这两者略有不同。 “方法属于类，结构和枚举，而函数不属于。”
func thisIsAFunction() {
}
struct Employee {
func thisIsAMethod() {
}
}
让我们看一下函数和方法之间的一些区别：
| Function | Method |
|---|---|
| Functions have independent existence. You can define them outside of the class. | Methods do not have independent existence. They are always defined within a class, struct, or enum. |
| Functions are the properties of structured languages like C, C++, Pascal and object based language like JavaScript. Note: There is no concept of function in Java. |
Methods are the properties of Object-oriented language like C#, Java, Swift etc. |
| Functions don’t have any reference variables. | Methods are called using reference variables. |
| Functions are a self describing piece of code. | Methods are used to manipulate instance variable of a class. |
| Functions are called independently. | Methods are called using instance or object. |