Waker machinery that makes it all work, I recommend reading at least
NSDictionary, not NSData: The weights parameter is a dictionary mapping weight names to NSData blobs, not a single data buffer.，详情可参考体育直播
，这一点在快连下载-Letsvpn下载中也有详细论述
3. 递归：对左右子数组递归执行1-2步，这一点在爱思助手下载最新版本中也有详细论述
Gimbal lock confusion A stackoverflow answer on why the Gimbal lock occurs