How to split a string to a 2D array

[Domain]

On Saturday, 24 February 2018 at 07:51:27 UTC, Domain wrote:
> I want to convert a string like " a,b<br/>1, 2<br/>3<br/> " to 
> a 2D array like:
> [["a", "b"],
>  ["1", "2"],
>  ["3", "" ]]
>
>
> auto html = " a,b<br/>1, 2<br/>3<br/> ";
> auto rows = html.strip.chomp("<br/>").split("<br/>");
> string[][] data;
> rows.each!(a => data ~= a.split(","));
> string[][] result = data.map!(a => a.padRight("", 
> data[0].length).map!(b => b.strip)).array;
>
> but the result is not a string[][]:
>
> Error: cannot implicitly convert expression `array(map(data))` 
> of type `MapResult!(__lambda2, Result)[]` to `string[][]`

And why this not compile:

rows.each!(a => data ~= a.split(",").map!(b => 
b.strip).padRight("", 2));


Error: cannot deduce function from argument types !()(string[]), 
candidates are:
C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm\iteration.d(899): C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm\iteration.d(934):