Hi, I am new to boost, and is trying to implement shared_ptr solution to a 2d array of pointers. Eg Character *** characters; characters = new Character**[_info._l ]; for (int i=0; i< _info._l; i++){ characters[i] = new Character* [_info._w]; for( int j=0;j < _info._w; j++){ characters[i][j] = 0; } } This is a sparse array, most of the pointers will be set to 0. As I could not find much information about shared_array on line, I would like to check is there any issue with this implementation. boost::shared_array<boost::shared_array<boost::shared_ptr<Character>>> characterGrid(new boost::shared_array<boost::shared_ptr<Character>>[_info._l ]); for( int i=0;i< _info._l; i++) { characterGrid[i] = boost::shared_array<boost::shared_ptr<Character>>(new boost::shared_ptr<Character>[_info._w]); for( int j=0; j< _info._w; j++) { //is it alright for me to use an empty shared_ptr in this context to init the array? characterGrid[i][j] = boost::shared_ptr<Character>(); } } Thanks. Jeffrey.