Returns an LongStorage containing the size of each dimension of the tensor. Equivalent to #.

> x = torch.Tensor(4,5):zero()
> print(x)

0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
[torch.Tensor of dimension 4x5]

> return  x:size()
 4
 5
[torch.LongStorage of size 2]