title: How to Importing files from one project to another
body: <p>I want to copy some files "Classes" from another project to my current project, but when I run it I get dozen of errors, its seem there are some steps to copying file from one project to another project using Xcode , </p>
  
  <p>I can make a collection of files "Classes" accessible in my project?</p>
  
  <p>One project is Objective c, the another one seems to be Objective C++ </p>