如何将不同的类型传递给函数

Question

I have two golang functions, doing exactly same thing, one takes input a slice and the other takes a map as input. I want to combine this into one function, to avoid duplication.

func DoSomething([]data) {
//do something.
}

func DoSomething(map[string]data) {
    //do something.
}

Combined function may look like:

    func DoSomethingNew (param type) {
       //param could be map or slice
    }

I want to know if it is possible to pass different types to same function in golang and how. I googled but couldn't find anything relevant.

Answer 1

You can use interfaces <kbd>Go Playground</kbd>

func F(data interface{}) {
    switch data.(type){
    case []int:
        fmt.Println("Slice")
        fmt.Println(data)
    case map[string]int:
        fmt.Println("Map")
        fmt.Println(data)
    }

    fmt.Println()
}

where you actually check for the type and do something based on the type.