id summary reporter owner description type status milestone component version severity resolution keywords cc 3223 number of dimensions as static constant fhess Ronald Garcia multi_array and friends should provide the number of dimensions as a static member constant, so it is available at compile time and can be used in generic programming. I assume the num_dimensions() non-static member function was put in the design with the idea that the number of dimensions of a multi_array object might be dynamically changed. But since the multi array concept and classes doen't support changing the number of dimensions, it doesn't provide anything useful over a static constant. Feature Requests new Boost 1.40.0 multi_array Boost 1.39.0 Problem