select all rows (resp. columns) out of matrix

[TheFlyingFiddle]

On Thursday, 14 November 2013 at 22:18:44 UTC, TheFlyingFiddle 
wrote:
> unittest
> {
>   int[][] matrix = new int[][](n,m);
>
>   //Getting a collumn is simple.
>   int[] collumn0 = matrix[0];
>
>   //Getting a row is trickier
>   int[] row0;
>
>   //Loop over all collumns
>   foreach(i; matrix) {
>     row0 ~= matrix[i][0];
>   }
> }

Sry the way you get rows is wrong.
It should be

int[] row0;
foreach(collumn; matrix)
     row0 ~= collumn[0];

and not

>   int[] row0;
>
>   //Loop over all collumns
>   foreach(i; matrix) {
>     row0 ~= matrix[i][0];
>   }