RaggedIndexedContiguousArray.
size
Number of elements in the uncompressed data.
Examples:
>>> d.shape (73, 96) >>> d.size 7008 >>> d.ndim 2
>>> d.shape (1, 1, 1) >>> d.ndim 3 >>> d.size 1
>>> d.shape () >>> d.ndim 0 >>> d.size 1