param.go
func (p Param) UInt() (uint, error) {
	i, err := strconv.ParseUint(string(p), 10, strconv.IntSize)
	return uint(i), err
}
func (p Param) UInt() (uint, error) {
	i, err := strconv.ParseUint(string(p), 10, strconv.IntSize)
	return uint(i), err
}
// UInt returns param as uint