Casting from one pointer to pointer type to another in Golang error

Question

Can anyone tell my why this wouldn\'t compile?

package main

type myint int
func set(a **myint) {
    i := myint(5)
    *a = &i 
}

func main() {
    var k *         


        

Answer 1

Here are two functionally equivalent working versions of your program.

package main

type mypint *int

func set(a *mypint) {
    i := int(5)
    *a = &i
}

func main() {
    var k *int
    set((*mypint)(&k))
    print(*k)
}

http://play.golang.org/p/l_b9LBElie

package main

type myint int

func set(a *myint) *myint {
    i := myint(5)
    a = &i
    return a
}

func main() {
    var k *int
    k = (*int)(set((*myint)(k)))
    print(*k)
}

http://play.golang.org/p/hyaPFUNlp8