title: Class Constants
body: <p>I have several obj-c classes, each of which require a number of constants that are used in switch statements.</p>
  
  <p>I had tried defining these numerical constants in the .m file using the <code>#define</code> preprocessor instruction. All these constants begin with 'kCell'. This seems to work well but Xcode's code sense is presenting me with every 'kCell' prefixed constant no matter where I am in the project. Do <code>#define</code> constants have global scope? If so, what is the best way to define purely local class constants that won't class with similarly named constants in other classes?</p>