• Zz (18/18) Jun 02 2017 Hi,
• 9il (40/58) Jun 02 2017 Hello Zz,
• Zz (2/72) Jun 03 2017 Thanks

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

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: 


If you have any questions feel free to ask at the Gitter:
https://gitter.im/libmir/public

Best,
Ilya

Best,
Ilya

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: 


 If you have any questions feel free to ask at the Gitter:
 https://gitter.im/libmir/public

 Best,
 Ilya

 Best,
 Ilya

Thanks