Filter to AlphaNumerics

package main

import (
    "fmt"
    "regexp"
)

func main() {

    example := "#GoLangCode!$!"

    // Make a Regex to say we only want letters and numbers
    reg, err := regexp.Compile("[^a-zA-Z0-9]+")
    if err != nil {
      panic(err)
    }
    processedString := reg.ReplaceAllString(example, "")

    fmt.Println(processedString)
}