Xaree Lee questions

• RACObserve bounds or frame of a UIView?
• gulp: how to execute shell command and get the output
• Why is `do{} while(0);` so fast?
• How to scan iBeacon signals without specifying UUID?
• How to get a specific recurrent EKEvent in the future date?
• Run tests only for staged files: `git stash -k -u` and `git stash pop` will raise conflicts on partial staged files
• How to acknowledge system alerts automatically using KIF test framework?
• How to implement recursive blocks?
• Regex to match all capital and underscore
• Why the objc runtime function `class_addMethod()` adds the implementation as instance and class method when the target class is `NSObject`?

Xaree Lee answers