On 2/6/06, Larry Wall <[EMAIL PROTECTED]> wrote: > So the basic answer to you question is, I think, yes. If Dog chooses > to always return true for .defined, then (in Haskell terms) it's more > like a Just type than a Maybe type. Perl 6's objects like to be Maybe > types by default, but you can override it. (I'm using the Haskell > terms loosely here, of course.) But the very concept of definedness > is getting mushy in Perl 6. What we need is more concepts of the > form "Is this *sufficiently* defined for what I want to do with it?" > That's why I proposed "defined according to a particular role" as > one way to ask that sort of question.
So, if ^Dog describes a Dog which defines a $dog, do we need an undescribed() function? Just kidding... kinda. Ashley Winters
