HaloO, I wrote:
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.
Other ideas are: [[]] and @@() with the latter not very likely because it implies any multidimensional array somehow having at least one element. Regards, TSa. -- The Angel of Geometry and the Devil of Algebra fight for the soul of any mathematical being. -- Attributed to Hermann Weyl
