Denis Koroskin wrote:
On Sat, 20 Dec 2008 16:46:44 +0300, Christopher Wright
<dhase...@gmail.com> wrote:
Sergey Gromov wrote:
Thu, 18 Dec 2008 18:36:07 -0500, Christopher Wright wrote:
Weed wrote:
Compile-time creation an object of class or (most likely wrong)
struct inheritance.
I have prepared a distinct feature request and send it later
You aren't providing a use case, though. Why not show an example
(actual code) of what you would do if you had this ability?
static invariant Identity = new Matrix([[1,0,0], [0,1,0], [0,0,1]]);
Okay, do you want to access that matrix in a template? Is there a
reason it can't be a struct?
Let's say, there is an IMatrix interface and its implementations, such
as SparseMatrix, RowMajor/ColumnMajorMatrix etc.
class IdentityMatrix : IMatrix
{
public float at(int row, int col) { return (row == col) ? 1 : 0; }
}
Score! We finally have a use case! I thought there would be a reasonable
use case, but I couldn't come up with one off the top of my head.
The workaround would be to use a struct at compile time and convert to
an appropriate class when necessary. This is a rather ugly workaround;
it takes a fair bit of time at runtime and increases executable sizes (I
don't think you could do a sparse matrix at compile time, for instance
-- you would need dynamic allocation for that).
