csvToStringMatrix

// empty lines are allowed by default
auto data = `012,abc,"mno pqr",0` ~ "\n\n" ~ `982,def,"stuv wx",1`
    ~ "\n" ~ `78,ghijk,"yx",2`;

auto matrix = data.csvToStringMatrix();

import mir.ndslice.slice: Slice, SliceKind;

static assert(is(typeof(matrix) == Slice!(string*, 2)));

import mir.test: should;
matrix.should ==
[[`012`, `abc`, `mno pqr`, `0`], [`982`, `def`, `stuv wx`, `1`], [`78`, `ghijk`, `yx`, `2`]];

import mir.ndslice.dynamic: transposed;
auto transp = matrix.transposed;
static assert(is(typeof(transp) == Slice!(string*, 2, SliceKind.universal)));

transp.should ==
[[`012`, `982`, `78`], [`abc`, `def`, `ghijk`], [`mno pqr`, `stuv wx`, `yx`], [`0`, `1`, `2`]];