Let's assume I have this struct with a method:
package main
import (
"fmt"
"reflect"
)
type MyStruct struct {
}
func (a *MyStruct) AAction() {
fmt.Println("Hello a")
}
Now, if I want to call the method "AAction" by string, I can use reflection (this works):
func main() {
reflect.New(reflect.TypeOf(MyStruct{})).MethodByName("AAction").Call([]reflect.Value{})
}
The problem is, that I don't want to use MyStruct{} as an expression, but as a string. Of course this doesn't work:
func main() {
theStruct := "MyStruct"
theAction := "AAction"
reflect.New(reflect.TypeOf(theStruct)).MethodByName(theAction).Call([]reflect.Value{})
}
because reflect.Typeof(theStruct) would be a string. I tried reading through the documentation, sadly, I can't find anything very useful.
I found this similar question: Call a Struct and its Method by name in Go?
Under the accepted question, the OP asks:
The issue in my case Is I cant not declare t is typed T, its must be some how I can declare t typed T by the name of T is string "T"
which gets answered by
[...] I would suggest to match the name against the string "T" somewhere in your code [...]
which doesn't solve the problem, as I would still need to call MyStruct{} somewhere.
The question is: is there any way to use a struct by giving the name as a string? (without manually mapping the the name of the struct to the struct)
Working version with using reflect.TypeOf(MyStruct{}):
PlayGround
Not working version, obviously calling the method on a string: PlayGround
