Thanks very much for all your replies. I wrote
However, for maps, the second variation (declaring outside the macro) doesn't work:
map<int,int> m; ... FOREACH (map<int,int>::value_type i, m) {...} // compiles map<int,int>::value_type i; FOREACH (i, m) {...} // COMPILE ERROR
And the various replies are right on the money, and appreciated. I thought it was something like this, but I couldn't quite figure out what was going on. If anyone's interested: I'm playing with the idea of extending FOREACH in a way so that, instead of having a pair<>, you've got two separate variables for key and value. Maybe something like: map<int,int> m; ... FOREACH_PAIR(int key, int value, m) { ... } I'm having a very moderate amount of success. Anyone else playing with this sort of thing? Thanks again! ---------------------------------------------------------------------- Dave Steffen, Ph.D. "The only justification for our concepts and Software Engineer IV systems of concepts is that they serve to Numerica Corporation represent the complex of our experiences; ph (970) 419-8343 x27 beyond this they have no legitimacy." fax (970) 223-6797 -- Albert Einstein dgsteffen@numerica.us