title: Load all files in the app bundle containing a string in their filename into a NSMutableArray?
body: <p>So I have a folder called "content" in my app's bundle . I would need to load all files, which contain a string, I provide (for example "dog"), in their filename into a NSMutableArray. How can I do this, if it even is possible? </p>
  
  <p>Thanks a lot in advance!</p>