Re: Multidimensional array vs. array of array

["Mark Lundquist" <mlundquist2@attbi.com>]

"Lutz Donnerhacke" <lutz@iks-jena.de> wrote in message
news:slrna1d1o8.7nl.lutz@belenus.iks-jena.de...
> How does a skilled Ada programmer define a return type containing a
> multidimensional array? Of course, the simple solution works:
>
>   type Equations is array (Rows range <>, Columns range <>) of Number;
>   type Workspace (row : Rows; col : Columns) is record
>     eqs : Equations (Rows'First .. row, Columns'First .. col);
>     ... some more stuff ...
>   end record;
>   function Init_Workspace return Workspace;
>
> But this approach fails miserably on extracting a single row from the
result
> as well as on construction the result in a recursive function.

Would it help you to just define a distinct type to represent a row in
isolation, but keep your matrix as defined above (i.e. not in terms of
composition of the row type)?

-- mark