Darren Duncan wrote: > Jon Lang wrote: >> Here, we need a bit of a clarification: are we talking roles or >> classes? Real example: Numeric is a role; Num is a class. Both can >> be used in signatures; but only classes can be used to create objects. >> That is, "my Num $x;" works; but "my Numeric $x;" doesn't. As such, >> you cannot coerce an object to a role; you can only coerce it to a >> class that does that role. > > Bad example. Both of those would work. Otherwise one of the main reasons > for roles to exist, which is to be able to declare a container $x and say > that it may hold anything that does role Y, wouldn't be possible. Perhaps a > better example is "Num.new(...)" works but "Numeric.new(...)" doesn't. --
You are, of course, correct. I think that what I meant to say was "my $x is Num" vs. "my $x is Numeric". -- Jonathan "Dataweaver" Lang
