How is "opt-out option types" different from, say, Java, where everything is nullable and all the problems that come with that? Honest question, as I haven't h

How is "opt-out option types" different from, say, Java, where everything is nullable and all the problems that come with that? Honest question, as I haven't had a chance to look into P6 as much as I would like. It looks pretty cool in a lot of ways, but I'm worried that all of the options available would create a confusing mess. > Note that the author of the OP is well known in the Erlang community. Yeah, my comment was directed at the parent who asked: > I don't understand how some other language would not need to handle all the errors ? And was intending to give a brief description of how other languages (possibly including P6, though I don't have the experience to say) handle errors differently from the languages they listed (go/java/php/python/js).