On Sunday, 13 December 2015 at 15:25:11 UTC, Stefan Frijters
wrote:
On Friday, 11 December 2015 at 22:56:15 UTC, Ilya wrote:
On Friday, 11 December 2015 at 19:31:14 UTC, Stefan Frijters
wrote:
[...]
Slice!(N, T*) arr;
[...]
// compute length
// more flexible construtors would be added after
// allocatrs support for ndslice
size_t len = 1;
foreach(l; lengths)
len *= l;
arr = new T[len].sliced(lengths);
[...]
std.experimental.ndslice.selection: indexSlice, byElement;
foreach(p; someField.shape.indexSlice.byElement) {
someField[p] = foo(someOtherField[bar(p)]);
...
}
[...]
See also updated docs:
http://dtest.thecybershadow.net/artifact/website-13cbdcf17d84fc31328c3f517a56bea783c418d6-d9c63e815273f0906309088334e7dfb1/web/phobos-prerelease/std_experimental_ndslice.html
Ilya
Thank you for your help. I'm trying to convert my code again at
the moment, but ran into a new problem: I need to pass a
pointer to the data into a C function. It seems that the .ptr
property is not available, and using & caused dmd to segfault
(currently running a Dustmite reduction for that). Is there any
clean way to get a pointer to the underlying data?
Could you please post reduced code example that caused dmd to
segfault?
2D way: &slice[0, 0] or &(slice.front.front());
ND way: &(slice.byElement.front())
Note: Comparing with unstandard there is no guarantee that the
first element in a ndarray is the first element in memory.
`reversed` and `allReversed` should not be used to preserve
strides positive.
The latests docs (with fixed English):
http://dtest.thecybershadow.net/artifact/website-13cbdcf17d84fc31328c3f517a56bea783c418d6-dd2292a424959b594956eeeba64d391f/web/phobos-prerelease/std_experimental_ndslice.html
Voting For std.experimental.ndslice
http://forum.dlang.org/post/[email protected]
Please Vote!
Ilya
