For the following code:
package main
import "fmt"
type intFunc func(int) int
var t = func() intFunc {
a := func(b int) int { return b}
return a
}
func main() {
fmt.Println(t()(2))
}
Is there a way to return the pointer to the function instead of the function directly? (something like return &a)?
The playground is here: https://play.golang.org/p/IobCtRjVVX
Yes, as long as you convert the types correctly:
https://play.golang.org/p/3R5pPqr_nW
type intFunc func(int) int
var t = func() *intFunc {
a := intFunc(func(b int) int { return b })
return &a
}
func main() {
fmt.Println((*t())(2))
}
And without the named type:
https://play.golang.org/p/-5fiMBa7e_
var t = func() *func(int) int {
a := func(b int) int { return b }
return &a
}
func main() {
fmt.Println((*t())(2))
}
Accessing other packages:
https://play.golang.org/p/X20RtgpEzqL
package main
import "fmt"
var f = fmt.Println
var p2f = &f
func main() {
(*p2f)("it works")
}
