How can I pass the parameter to a Http handler function

[nvcnvn]

Example:
#############################
func handler(w http.ResponseWriter, r *http.Request, mystr string) {
println(mystr);
}
func main() {
hi := "hello"
http.HandleFunc("/test", handler)
http.ListenAndServe(":8080", nil)
}
#############################

How can I pass "hi" to my handler?

[chris dollin]

Use a closure,

(That is, make `handler` take `hi` as an argument, then pass

func (w http.ResponseWriter, r *http.Request, mystr string) {
handler( hi, w, t ) }

to HandleFunc.)

Or make a type satisfying the Handler interface and put your
hi variable in it.

Chris

--
Chris "allusive" Dollin

[Kyle Lemons]

func handler(w http.ResponseWriter, r *http.Request, mystr string) {
       println(mystr);
}
func main() {
       hi := "hello"

       http.HandleFunc("/test", func(w http.ResponseWriter, r *http.Request) {

              handler(w, r, hi)

       })

       http.ListenAndServe(":8080", nil)
}

Keep in mind, updating "hi" is not advisable after this, because it will be accessed concurrently from other goroutines, so you'd need a lock or some other scheme if you were going to do so.

[rugwir...@gmail.com]

This thread saved me many hours of my life.