I think you'll need to use something like: for(filter_itr f(i.begin(), i.end()); f != filter_itr(i.end()); ++f)

Ok, cool, I've got it working on a vector of ints. My next question is this: I've got a vector of boost::any's, and I want to iterate across only the boost::any's representing int's. For example: === CODE === template<typename T> struct isT { bool operator() (const boost::any & a) const { return a.type() == typeid(T); } }; int main() { std::vectorboost::any av; av.push_back(1); av.push_back(std::string("hello")); av.push_back(2); typedef boost::filter_iteratorboost::any::iterator

int_itr;

for(int_itr itr(av.begin()); itr != int_itr(av.end()); ++itr) ; } ========= Unfortunately, the above code seg faults when executed. I imagine I've probably constructed my filter_iterator incorrectly somehow. Any ideas? Thanks, --Steve Stephen Gross Case Western School of Medicine Cleveland, OH "By Grabthar's hammer, by the sons of Worvan, you shall be avenged." - Dr. Lazarus