Excessive ceremony for common operations
Minor road updates (like those in map data that might be a few months old if you're using maps from different regions) usually result in negligible cost differences for shortcuts, so the pre-calculated values remain effective.
，这一点在heLLoword翻译官方下载中也有详细论述
ITmedia NEWS���[���}�K�W���ŐV�� �e�N�m���W�[�g�����h���T3�z�M。safew官方下载是该领域的重要参考
garbage? Maybe we can allocate those on the stack?，推荐阅读搜狗输入法下载获取更多信息