import mir.ndslice.allocation: slice;
import mir.ndslice.topology: iota;

auto pad = iota([2, 3], 1)
    .padSymmetric!([1], ["pre"])([2])
    .slice;

assert(pad == [
    [2, 1,  1, 2, 3],
    [5, 4,  4, 5, 6]]);

import mir.ndslice.allocation: slice;
import mir.ndslice.topology: iota;

auto pad = iota([2, 2], 1)
    .padSymmetric!([0, 1], ["both", "post"])([2, 1])
    .slice;

assert(pad == [
    [3, 4,  4],
    [1, 2,  2],

    [1, 2,  2],
    [3, 4,  4],

    [3, 4,  4],
    [1, 2,  2]]);