to method

Implementation

@override
dynamic to(dynamic value)
{
  try
  {
    if (value == null)   return null;
    if (value is num)    return value;
    if (value is String) {
      if (value == '') return null;
      return num.parse(value);
    }
    return Exception();
  }
  catch(e)
  {
    return e;
  }
}