You come at a certain point in the development of every app that what you see in the simulator does not match what you think should happen. Mostly these are human errors -- or at least they are in most of my cases ;-) -- but sometimes Xcode has just 'lost track', or so it seems. I've learnt that the Clean (Shift+Cmd+K) and Clean Build Folder… (Option+Shift+Command+K) menu options can show the difference between your error or Xcode's.
My question though is:
What does the
Cleancommand do or not do, which leaves a reason forClean Build Folder…to exist? When should I pick one over the other, why not just always clean the whole folder?
Clean… cleans the folders for the current selected target.
Clean Build Folder… cleans the folders for all the targets.