Re: Finding Max Value of Column in Multi-Dimesional Array

[Jordan Wilson via Digitalmars-d-learn]

On Friday, 5 July 2019 at 00:54:15 UTC, Samir wrote:

Is there a cleaner way of finding the maximum value of say the third column in a multi-dimensional array than this?

int[][] p = [[1,2,3,4], [9,0,5,4], [0,6,2,1]];
writeln([p[0][2], p[1][2], p[2][2]].max);

I've tried the following
writeln([0, 1, 2].map!(p[a][2]).max);

but get an "Error: undefined identifier a" error.

I know there doesn't seem to be much of a difference between two examples but my real-world array is more complex which is why I'm looking for a more scalable option.

Thanks
Samir

p.map!(a => a[2]).maxElement.writeln; // 5
p.map!"a[2]".maxElement.writeln; // 5

Or, modifying your example:
writeln([0,1,2].map!(a => p[a][2]).maxElement;

Thanks,

Jordan