gistfile1.txt

myApp.factory('dataThing',function($q,$http){

  var thatData = null;
  
  return {
  
    getData : function(){
      
      //create a promise
      var deferredData = $q.defer()
      
      //if we have the data already, just resolve with that
      if(thatData){
      
        deferredData.resolve(thatData)
      }
      //else get it from the server
      else{
        
        $http.get('/data.json').then(function(response){
          
          thatData = response.data;
          
          //resolve the promise w/ the data
          deferredData.resolve(thatData)
        
        })
        
      }
      
      
      //return the promise
      return deferredData.promise;
    }
  
  }
  


})