reflect_function_call.go

package main
import (
  "fmt"
  "reflect"
)

func main() {
	// register method
	tasks := make(map[string]interface{})
	tasks["add"] = add

	// retrieve and run
	task := tasks["add"]
	f := reflect.ValueOf(task)

	// number of arguments supported by func
	numArgs := f.Type().NumIn()
	log.Printf("Num Args: %d\n", numArgs)

	// construct arguments
	params := []interface{}{44545, 853905}
	log.Printf("Num Param: %d\n", params)

	// convert arguments to reflect
	in := make([]reflect.Value, len(params))
	for k, param := range params {
		in[k] = reflect.ValueOf(param)
	}
	res := f.Call(in)
	log.Println(res[0])

}