It seems that the problem I am having is related to this: http://www.parashift.com/c++-faq-lite/pointers-to-members.html Still, I would appreciate your kind assistance... TIA, -Ramon Ramon F Herrera wrote:

Hello,

This is my first non-trivial, multi-file C++ program with classes and I bumped into a problem. See example from the Regex library below.

The problem occurred after I converted the simple code below to a class (called "Pairs"). The troublesome statement is this one, where we attempt to take the address of a function.

std::for_each(m1, m2, ®ex_callback);

My first compilation attempt produces an error message from the compiler, which is nice enough to offer a solution:

pairs.cpp:247: error: ISO C++ forbids taking the address of an unqualified or parenthesized non-static member func tion to form a pointer to member function. Say `&Pairs::assignment_callback'

So, following the compiler's suggestion, I changed the line above to this:

std::for_each(m1, m2, &Pairs::assignment_callback);

Now, I am getting an inscrutable (for me, anyway) error message:

stl_algo.h:158: error: must use .* or ->* to call pointer-to-member function in `__f (...)'

Thanks for your kind assistance,

-Ramon

===================================================

int main(int argc, const char** argv) { std::string text; for(int i = 1; i < argc; ++i) { cout << "Processing file " << argv[i] << endl; std::ifstream fs(argv[i]); load_file(text, fs); // construct our iterators: boost::sregex_iterator m1(text.begin(), text.end(), expression); boost::sregex_iterator m2; std::for_each(m1, m2, ®ex_callback); // copy results: cout << class_index.size() << " matches found" << endl; map_type::iterator c, d; c = class_index.begin(); d = class_index.end(); while(c != d) { cout << "class \"" << (*c).first << "\" found at index: " << (*c).second << endl; ++c; } class_index.erase(class_index.begin(), class_index.end()); } return 0; }