NSLog 10b meaning?

Question

Whenever I use NSLog(), it always shows this mysterious \"10b\" next to the process ID. I know that this is tied somehow to the thread where the NSLog() call was made, but w

Answer 1

IIRC, it's a thread id.

Answer 2

It’s the thread ID; specifically, it’s the mach thread ID. You can get it yourself:

pthread_mach_thread_np(pthread_self())