Here is a small code snipped that demonstrates how to get type information
from a func type in Go. I prints the
information to the console. More information about reflection can be found at
the great Go docs article The Laws of Reflection.
Code
package main
import (
"fmt"
"reflect"
)
type Multiplier func(x int, y int) int
func main() {
m := Multiplier(Multipli)
mType := reflect.TypeOf(m)
fmt.Printf("name: %v\n", mType.Name())
fmt.Printf("number of in args: %v\n", mType.NumIn())
fmt.Printf("number of out args: %v\n", mType.NumOut())
fmt.Printf("in arg 1 type: %v\n", mType.In(0).Name())
fmt.Printf("in arg 2 type: %v\n", mType.In(1).Name())
fmt.Printf("out arg 1 type: %v\n", mType.Out(0).Name())
}
func Multipli(x int, y int) int {
return x * y
}
Prints
$ go run method.go
name: Multiplier
number of in args: 2
number of out args: 1
in arg 1 type: int
in arg 2 type: int
out arg 1 type: int