Golang structure method accepts multiple parameter types

php Editor Apple today will introduce to you the structure methods in Golang. These methods can accept multiple parameter types. Golang is an open source statically typed programming language that supports object-oriented programming style and provides structures as a data type. Struct methods are special functions that can operate and modify structures. Unlike other languages, Golang's structure method can accept multiple parameter types, which brings more flexibility and convenience to developers. Let’s take a closer look at this feature.

Question content

My method is as follows:

func (t *worker) updateinfo(n structtype1, node structtype2)

However, now I need to use this api to handle structtype1 and structtype3. This means n can be structtype3.

How can I modify the method to achieve this instead of writing another method like below and repeating the same code?

func (t *Worker) updateInfo(n structType3, node structType2)

Edit: These structures are all my own custom structures

Solution

In this case, you can use generics.

For example, suppose structtype1 and structtype2 have a method named print.

type  structtype1 struct {}
func(st1 structtype1) print() {
 fmt.println("calling print function of structtype1")
}

type  structtype3 struct {}
func(st3 structtype3) print() {
 fmt.println("calling print function of structtype2")
}

We can define an interface type declaration as shown below.

type struct13 interface {
 print()
 structtype1 | structtype3 // type union 
}

Then you need to modify the worker structure and updateinfo function using the type parameters. (Note: The print function in struct13 is for demonstration purposes.)

type worker[t struct13] struct{}

func (t *worker[t]) updateinfo(n t, node structtype2) {
 n.print()
}

We can use the above implementation as shown below.

    st1 := structType1{}
    st2 := structType2{}
    st3 := structType3{}


    w1 := Worker[structType1]{}
    w1.updateInfo(st1,st2)

    w2 := Worker[structType3]{}
    w2.updateInfo(st3,st2)

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