func StringQueryParam(r *http.Request, key string) (string, bool) {
	values := r.URL.Query()
	if _, ok := values[key]; !ok {
		return "", false
	}
	return values.Get(key), true
}
// StringQueryParam extracts a query parameter as string.
StringQueryParam extracts a query parameter as string.
// StringQueryParam extracts a query parameter as string .
func StringQueryParam(r *http.Request, key string) (string, bool) {
	values := r.URL.Query()
	if _, ok := values[key]; !ok {
		return "", false
	}
	return values.Get(key), true
}
func StringQueryParam ( r * http . Request , key string ) ( string , bool ) { values := r . URL . Query ( ) if _ , ok := values [ key ] ; ! ok { return " " , false } return values . Get ( key ) , true }
StringQueryParam extracts a query parameter as string.
StringQueryParam extracts a query parameter as string .