How to declare multiple interface constraints in golang?

php Editor Banana will introduce to you how to declare multiple interface constraints in golang. In golang, we can implement multiple interface constraints by using multiple interfaces in the interface type declaration. This approach allows us to define interfaces more flexibly to adapt to different implementation needs. By using multiple interface constraints, we can have a type implement multiple interfaces, thus providing more functionality and flexibility. Next, we will introduce in detail how to declare multiple interface constraints in golang.

Question content

Suppose I have two interfaces:

interface a {...}
interface b {...}

Now I want to define a function to accept some parameters of interfaces a and b (that is, the parameters implement interfaces a and b):

func test(param a & b) {...} // any similar syntax?

I don't want to write a new interface to embed other interfaces every time I want to reference multiple interfaces, like this:

interface C {
  A
  B
}
func test(param C) {...} //ok with 2 interfaces, what about 3, 4 or even 9?

I don't know how to express intersection types in golang, any ideas?

Workaround

Not possible in Go because it's an ambiguous control flow that Go is designed to avoid.

Types do not need to implement interfaces by name, so my suggestion is to declare an anonymous interface for each parameter, containing only the methods you know the function needs.

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