Hi, just a quick note that I uploaded the money/currency-stuff to the sandbox files section. I also moved some stuff from the Yahoo-Files and I added two techniques in case someone is interested. The overload_literal_zero-technique is used in the money class, too. You can find the files here: <http://tinyurl.com/6prl6> = <http://boost-sandbox.sourceforge.net/vault/index.php?&direction=0&order=&directory=daniel_frey> The money/currency-framework is seriously cut down. I lacks support for nan/infinity, swap(), etc. - it's just meant as a starter for more discussion, it's main point is to illustrate what I think should be allowed and what shouldn't wrt operators. Example: money / money -> decimal, exception on currency mismatch money / decimal -> money decimal / money -> compile time error Hope someone can make any use of it :o) Regards, Daniel