Go map of functions

Question

I have Go program that has a function defined. I also have a map that should have a key for each function. How can I do that?

I have tried this, but this doesn\'t wo

Answer 1

You can define a type if functions are same interface.

package main

import "log"

type fn func (string)

func foo(msg string) {
  log.Printf("foo! Message is %s", msg)
}

func bar(msg string) {
  log.Printf("bar! Message is %s", msg)
}

func main() {
  m := map[string] fn {
    "f": foo,
    "b": bar,
  }
  log.Printf("map is %v", m)
  m["f"]("Hello")
  m["b"]("World")
}