HaloO,
Larry Wall wrote:
No, the inner () is also in list context, and () in list context
always just disappears.
And 0,1 X () is going to be (). Perl 6's infix:<X> is defined over
lists, not sets. If you want to overload X for set types, you may.
Then [X]() also is ()? How about (0,1) X ([]) === (0,1)?
The original question was sort of about how to write a list
that has .elems == 1 but "no" content.
Regards, TSa.
--
The Angel of Geometry and the Devil of Algebra fight for the soul
of any mathematical being. -- Attributed to Hermann Weyl
