func (a *Args) Del(key string) {
	a.args = delAllArgs(a.args, key)
}
func (a *Args) Del(key string) {
	a.args = delAllArgs(a.args, key)
}
func ( a * Args ) Del ( key string ) { a . args = delAllArgs ( a . args , key ) }
// Del deletes argument with the given key from query args.
Del deletes argument with the given key from query args .