Programming stop execute in iOS when debug?

Question

Want to build a debug tool to monitor the app, pause execution when bad things occur. Dev can continue run the program after be notified the problem. May I just throw a exception or use a special signal? I have tried raise(SIGSTOP), looks good. But the backtrace showed in Xcode is not exactly what I stop it. Can I make a real time stop? JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

If fatal error comes, it terminates by itself. If you want to 1) break code execution: Use breakpoints: http://jeffreysambells.com/2014/01/14/using-breakpoints-in-xcode 2) log output: use NSLog() for Objective-C use print() for Swift Swift: print() vs println() vs NSLog()