Xcode 4 “Clean” vs. “Clean Build Folder”

Question

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 --

Answer 1

As of Xcode 10, 'Clean' has effectively disappeared. Apple says here:

"The new build system uses the "clean build folder" behavior. The legacy "clean" behavior is not supported".