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digitalmars.D.learn - Guide - Migrating from std.experimental.ndslice to mir-algorithm

reply Zz <zz nospam.com> writes:
Hi,

Just tried migrating from std.experimental.ndslice to 
mir-algorithm.

Is there a guide on how migrate old code?

I used the following imports before and using then with ndslice.

import std.experimental.ndslice;
import std.algorithm : each, max, sort;
import std.range : iota, repeat;

simplified example of how it was used.
auto a = cr.iota.sliced(r, c);
auto b = a.reshape(c, r).transposed!1;

auto c = a.reversed!1;
auto d = a.reshape(c, r).transposed!1.reversed!1;

auto f = new int[cr].sliced(r, c);
auto h = f.transposed(1);

how can I do the following in mir-algorithm.

Note: I will be going through the documentation.

Zz
Jun 02
parent reply 9il <ilyayaroshenko gmail.com> writes:
On Friday, 2 June 2017 at 16:08:20 UTC, Zz wrote:
 Hi,

 Just tried migrating from std.experimental.ndslice to 
 mir-algorithm.

 Is there a guide on how migrate old code?

 I used the following imports before and using then with ndslice.

 import std.experimental.ndslice;
 import std.algorithm : each, max, sort;
 import std.range : iota, repeat;

 simplified example of how it was used.
 auto a = cr.iota.sliced(r, c);
 auto b = a.reshape(c, r).transposed!1;

 auto c = a.reversed!1;
 auto d = a.reshape(c, r).transposed!1.reversed!1;

 auto f = new int[cr].sliced(r, c);
 auto h = f.transposed(1);

 how can I do the following in mir-algorithm.

 Note: I will be going through the documentation.

 Zz
Hello Zz, std.experimental.ndslice -> mir.ndslice std.range : iota, repeat -> mir.ndslice.topology: iota, repeat; std.algorithm : each; -> mir.ndslice.algorithm: each; std.algorithm : max; -> mir.utility: max; std.algorithm : sort; -> mir.ndslice.sorting: sort; Note, that Mir functions has different semantics compared with Phobos! For example, each iterates deep elements, so should be combined with `pack` to iterates rows instead of elements. Ndslices work with Phobos functions but it is suggested to use Mir analogs if any. // Mir's iota! It is already 2D ndslice :-) auto a = [r, c].iota; auto b = a // returns flattened iota, a has Contiguous kind, // so the result type would be equal to `iota(r*c)` .flattened // convert 1D iota ndslice to 2D iota ndslice .sliced(c, r) // It is required to use transposed // Convert ndslice kind from Contiguous to Universal. .universal // Transpose the Universal ndslice .transposed; auto c = a.universal.reversed!1; auto d = a.flattened.sliced(c, r).universal.transposed!1.reversed!1; // see also `rotated` auto f = slice!int(c, r); // new int[cr].sliced(r, c); works too. auto h = f.universal.transposed(1); ------- Mir ndslices have three kinds: http://docs.algorithm.dlang.io/latest/mir_ndslice_slice.html#.SliceKind If you have any questions feel free to ask at the Gitter: https://gitter.im/libmir/public Best, Ilya Best, Ilya
Jun 02
parent Zz <zz nospam.com> writes:
On Saturday, 3 June 2017 at 05:21:13 UTC, 9il wrote:
 On Friday, 2 June 2017 at 16:08:20 UTC, Zz wrote:
 Hi,

 Just tried migrating from std.experimental.ndslice to 
 mir-algorithm.

 Is there a guide on how migrate old code?

 I used the following imports before and using then with 
 ndslice.

 import std.experimental.ndslice;
 import std.algorithm : each, max, sort;
 import std.range : iota, repeat;

 simplified example of how it was used.
 auto a = cr.iota.sliced(r, c);
 auto b = a.reshape(c, r).transposed!1;

 auto c = a.reversed!1;
 auto d = a.reshape(c, r).transposed!1.reversed!1;

 auto f = new int[cr].sliced(r, c);
 auto h = f.transposed(1);

 how can I do the following in mir-algorithm.

 Note: I will be going through the documentation.

 Zz
Hello Zz, std.experimental.ndslice -> mir.ndslice std.range : iota, repeat -> mir.ndslice.topology: iota, repeat; std.algorithm : each; -> mir.ndslice.algorithm: each; std.algorithm : max; -> mir.utility: max; std.algorithm : sort; -> mir.ndslice.sorting: sort; Note, that Mir functions has different semantics compared with Phobos! For example, each iterates deep elements, so should be combined with `pack` to iterates rows instead of elements. Ndslices work with Phobos functions but it is suggested to use Mir analogs if any. // Mir's iota! It is already 2D ndslice :-) auto a = [r, c].iota; auto b = a // returns flattened iota, a has Contiguous kind, // so the result type would be equal to `iota(r*c)` .flattened // convert 1D iota ndslice to 2D iota ndslice .sliced(c, r) // It is required to use transposed // Convert ndslice kind from Contiguous to Universal. .universal // Transpose the Universal ndslice .transposed; auto c = a.universal.reversed!1; auto d = a.flattened.sliced(c, r).universal.transposed!1.reversed!1; // see also `rotated` auto f = slice!int(c, r); // new int[cr].sliced(r, c); works too. auto h = f.universal.transposed(1); ------- Mir ndslices have three kinds: http://docs.algorithm.dlang.io/latest/mir_ndslice_slice.html#.SliceKind If you have any questions feel free to ask at the Gitter: https://gitter.im/libmir/public Best, Ilya Best, Ilya
Thanks
Jun 03