CODEWITHSUNDEEP
go
Giridhar Bandi
Giridhar Bandi

Reputation: 1323

golang too many arguments to return

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)
}

Upvotes: 2

Views: 5322

Answers (2)

Tobias Gustafsson
Tobias Gustafsson

Reputation: 297

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())

Upvotes: 5

Derlin
Derlin

Reputation: 9881

You didn't declare your function correctly.

full_name := func() string{ // add a return type
   return first_name
}

Even for an anonymous function, arguments and return values must be declared. Since you did not specify any return value, you cannot use return xx.

Also, be aware that fmt.Println(full_name) will return the address of the function, not execute the function. Try fmt.Println(full_name()) instead.

Upvotes: 1

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