On Saturday, 4 April 2020 at 09:25:14 UTC, Giovanni Di Maria
wrote:
Hi.
Is there a Built-in function (no code, only a built-in function)
that transform a linear array to a Matrix?
For example:
From
[10,20,30,40,50,60,70,80,90,100,110,120];
To
[
[10,20,30],
[40,50,60],
[70,80,90],
[100,110,120]
];
Thank You very much
Cheers.
Giovanni
Why not use "chunks" from std.range?
import std.range: chunks;
void main() {
int[] arr = [10,20,30,40,50,60,70,80,90,100,110,120];
auto matrix1 = arr.chunks(3).chunks(4); // no allocation
int[][][] matrix2 = arr.chunks(3).array.chunks(4).array;
}
But, keep in mind using array of arrays is not efficient.
For multidimensional arrays use Mir Slices.
If you need more information on how to create matrices, see this
article:
https://tastyminerals.github.io/tasty-blog/random/2020/03/22/multidimensional_arrays_in_d.html
