reflect.MethodByName() Function in Golang with Examples

Last Updated : 03 May, 2020

Go language provides inbuilt support implementation of run-time reflection and allowing a program to manipulate objects with arbitrary types with the help of reflect package. The reflect.MethodByName() Function in Golang is used to get function value corresponding to the method of v with the given name. To access this function, one needs to imports the reflect package in the program.

Syntax:
  func (v Value) MethodByName(name string) Value  
Parameters: This function does not accept any parameter. Return Value: This function returns a function value corresponding to the method of v with the given name.

Below examples illustrate the use of the above method in Golang: Example 1:

// Golang program to illustrate // reflect.MethodByName() Function     package main     import (     "fmt"     "reflect" )   // Main function type T struct {}  func (t *T) GFG() {     fmt.Println("GeeksForGeeks") }  func main() {     var t T     reflect.ValueOf(&t).MethodByName("GFG").Call([]reflect.Value{}) }

Output:

  GeeksForGeeks

Example 2:

// Golang program to illustrate // reflect.MethodByName() Function     package main     import (     "fmt"     "reflect" )   // Main function  type YourT2 struct {} func (y YourT2) MethodFoo(i int, oo string) {     fmt.Println(i)     fmt.Println(oo) }  func Invoke(any interface{}, name string, args... interface{}) {     inputs := make([]reflect.Value, len(args))     for i, _ := range args {         inputs[i] = reflect.ValueOf(args[i])     }     reflect.ValueOf(any).MethodByName(name).Call(inputs) }  func main() {      Invoke(YourT2{}, "MethodFoo", 10, "Geekforgeeks") }

Output:

  10  Geekforgeeks

reflect.MethodByName() Function in Golang with Examples

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reflect.MethodByName() Function in Golang with Examples

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