title: Stopping xcode from indexing
body: <p>I've been working with xCode 4.5.2, and have noticed that if you are indexing, you need to stop everything and let it do it's job, or else you'll get bogged down.  It's become a bit of a problem, as the project is a large one, and indexing has been taking a long time to do, and it will do it constantly. One instance was it indexed the entire project, after I worked a little bit on the project it started to re-index almost 75% of the project. I checked with source control, and there had been no changes to the project in the amount of time I worked on it.  </p>
  
  <p>Is there any way to stop the indexing entirely, or reduce the amount of times it indexes? Are there any downsides of turning off indexing? I had read in  previous questions where it was  said it prevented auto-complete and searching through the project.</p>