public Value(Number num)
{
// initialisation order is important because String and number fields overlap!
// The string must be set before the number overwrites it!
_string = default;
_number = num;
_type = Type.Number;
}
public Value(YString str)
{
// initialisation order is important because String and number fields overlap!
// The number must be set before the string overwrites it!
_number = default;
_string = str;
_type = Type.String;
}