reflect.MethodByName() Function in Golang with Examples
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:
package main
import (
"fmt"
"reflect"
)
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:
package main
import (
"fmt"
"reflect"
)
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
Last Updated :
03 May, 2020
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