Returns a reference to the cell at the requested position or coordinates
const T& at( size_t n ); const T& at( size_t r, size_t c );
Zero-based position of cell within array, counting row-wise.
Zero-based ordinal of row within array.
Zero-based ordinal of column within array.
Returns a reference to the contained cell if within range. In the debug build only, throws an exception if the coordinates or position are out of range.