OpenEuphoria

The shape of an object is firstly, whether it's an atom or a sequence, and secondly for a sequence, how deeply nested it is.

{1,2,3} and {4,5,6} have the same shape, as do 9.8 and -123.

{1,2,3} and {"1","2","3"} have different shapes, as 0 and "" have different shapes.