Now began the real work, contacting each vendor through web forms, forums, and support emails. Here’s how they ranked from best to worst.
NSMutableData *data = [NSMutableData dataWithLength:arr.size];
，这一点在im钱包官方下载中也有详细论述
like card punches and readers that were also smaller. Apparently following that
Falling headlong off the tee() memory cliff