On Wednesday, 6 September 2017 at 21:44:01 UTC, jmh530 wrote:
On Wednesday, 6 September 2017 at 20:24:05 UTC, Enamex wrote:
Similarly, a[0] has _strides [4, 1] for universal, [4] for
canonical, and [] for contiguous. Mir is written in such a way
that a[0] the same regardless of the SliceKind. For the most
part, this means that it isn't really obvious that there is a
difference between them. It matters in some underlying
functions, but I haven't needed to do much other than sometimes
convert a contiguous slice to universal (though it's not always
clear to me why, I just do it).
For example, lets takes `transposed` function. It does not
transpose the date. Instead, it swap dimensions.
Assume you have a canonical matrix with _lengths = [3, 4]. So its
strides are [4]. Now we want to swap dimensions, but to do it we
need to swap both lengths and strides. So first we need to
convert a slice to universal, so it will have both strides we
want to swap: [4, 1]. Transposed slice will have _lengths = [4,
3] and _strides = [1, 4].
Best Regards,
Ilya
