dongluan7821 2015-11-25 23:25
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如何将不同的类型传递给函数

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.

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  • dongzong5017 2015-11-25 23:31
    关注

    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.

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