#ifndef NALL_FOREACH_HPP #define NALL_FOREACH_HPP #include #include #undef foreach #define foreach2(iter, object) foreach3(iter, object, foreach_counter) #define foreach3(iter, object, foreach_counter) \ for(unsigned foreach_counter = 0, foreach_limit = container_size(object), foreach_once = 0, foreach_broken = 0; foreach_counter < foreach_limit && foreach_broken == 0; foreach_counter++, foreach_once = 0) \ for(auto &iter = object[foreach_counter]; foreach_once == 0 && (foreach_broken = 1); foreach_once++, foreach_broken = 0) #define foreach_impl(...) foreach_decl(__VA_ARGS__, foreach3(__VA_ARGS__), foreach2(__VA_ARGS__), foreach_too_few_arguments) #define foreach_decl(_1, _2, _3, N, ...) N #define foreach(...) foreach_impl(__VA_ARGS__) #endif