1package mux
 2
 3import (
 4	"context"
 5	"net/http"
 6)
 7
 8func contextGet(r *http.Request, key interface{}) interface{} {
 9	return r.Context().Value(key)
10}
11
12func contextSet(r *http.Request, key, val interface{}) *http.Request {
13	if val == nil {
14		return r
15	}
16
17	return r.WithContext(context.WithValue(r.Context(), key, val))
18}