Think about how you'd search a large room for a lost key. You wouldn't examine every square inch sequentially. You'd split the room into sections (by the couch, near the door, under the table) and rule out entire sections at a glance. "I didn't go near the kitchen, so skip that."
alloca which can allocate on the stack. Microsoft's C compiler also supports alloca but calls it _alloca
，这一点在旺商聊官方下载中也有详细论述
# -- Package installation --
- Include sensible aggregate metrics, e.g. number of comments on the video.