[Golang] Call Struct Method With Multiple Arguments And Returns by Name

package main

import (
        "fmt"
        "reflect"
)

type DemoStruct struct {
        s string
        i int
        f float64
}

func (d *DemoStruct) DemoFunc(s string, i int, f float64) (string, int, float64, DemoStruct) {
        return s, i, f, *d
}

func main() {
        ds := DemoStruct{"sacca", 1, 3.14}

        // call DemoFunc() method
        fmt.Println(ds.DemoFunc("dukkha", 0, 1.414))

        // call DemoFunc() method by Name
        retv := reflect.ValueOf(&ds).MethodByName("DemoFunc").Call([]reflect.Value{
                reflect.ValueOf("dukkha"),
                reflect.ValueOf(13),
                reflect.ValueOf(1.414),
        })
        fmt.Println(retv[0].String())
        fmt.Println(retv[0].Interface().(string))
        fmt.Println(retv[1].Int())
        fmt.Println(retv[1].Interface().(int))
        fmt.Println(retv[2].Float())
        fmt.Println(retv[2].Interface().(float64))
        fmt.Println(retv[3].Interface().(DemoStruct))
}