在将其作为接口传递并运行它的方法之后，让您将其结构返回到它的数据类型？

Question

I have a struct as follows

type MyStruct {
   EmbeddedFooBar
}

func (m *MyStruct) Foo(b *http.Request) {
   // Doing something
} 

func fn(args ...interfaces) {
    // It's here I want to get my struct back and run the "Get" method
    // Please keep in mind I am too pass a pointer param into the struct method
    strt := args[0]

    ....
    get struct back to static data type MyStruct
    and run "Get()", dont mind how/where I will get *http.Request to pass, assume I can
    ....

    strt.Get(*http.Request)
}

func main() {
    a := &MyStruct{}
    fn(a)
}

I am passing the struct above to a variadic function fn that expects ...interfaces{} (thus any type can satisfy the params)

Inside the function fn I want to get back my struct MyStruct to it's data type and value and run it's method Get that can also accept receivers such as *http.Request

How do I get My Struct back from the interface arg[0] and run the method Get of the struct with the ability of passing a pointer.

Answer 1

What you want is Type Assertion. Solution could something like this:

func fn(args ...interfaces) {
    if strt, ok := args[0].(*MyStruct); ok {
        // use struct
    } else {
        // something went wrong
    }
    // .......
}