in reply to Re^2: OO design: returning string and/or special value
in thread OO design: returning string and/or special value

Since OP does not specify anything, I'm making assumption, anything non-simple SCALAR (number/string) should be already objectified if OP is using OOD approach.
  • Comment on Re^3: OO design: returning string and/or special value

In Section Seekers of Perl Wisdom