Re: improved QR & Cholesky updating

[John W. Eaton]

On 21-Jan-2009, Jaroslav Hajek wrote:

| True, but it doesn't catch a warning, does it?

Are there cases where missing functions only generate warnings?

| OK, so where should the replacements go?
| Putting them in the QR & Cholesky classes means writing replacement
| code for 4 * 8 + 4 * 5 = 52 methods (OK, In fact only quarter and then
| copy-paste-search-replace-adjust). I suppose writing generic
| replacements directly in the DLD funcs would be simpler. Also, I'm
| thinking of issuing a warning the first time any of the updating
| function is run, only once.
| 
| What do you think?

I think the best place is in the QR::update method (for example),
because that way, any code that might use that class won't have to
work around missing functionality either.  Can templates or macros
help here?

jwe