golang太多参数无法返回

Question

When I assign a function to variable and try to invoke it . It throws an error 'too many arguments to return'

package main

import "fmt"

func main() {
  first_name := "Hello"
  last_name := "World!"
  full_name := func() {
    return first_name
  }
  fmt.Println(first_name)
  fmt.Println(last_name)
  fmt.Println(full_name)
}

Answer 1

You need to change your function definition to the following:

  full_name := func() string {
    return first_name
  }

That's how you tell Go that you intend to return something from a function and what that something is (a string in this case).

Then later you should call your newly created function like this:

   fmt.Println(full_name())