The following line does not work (it is from a cholesky routine
submitted a long time ago on this list):

UBLAS::project(U.row (i))(UBLAS::range (i + 1, size)) -= UBLAS::prod
( ...

while the following works:

(U.row (i)) (UBLAS::range (i + 1, size)) -= UBLAS::prod (

In the former case I got an error about const correctness while the
latter works smoothly

Hope it is a useful warning
Bye
Antonio

ps where on earth should I post any user question now?