lib/health-data-standards/models/entry.rb in health-data-standards-0.5.0 vs lib/health-data-standards/models/entry.rb in health-data-standards-0.7.0

@@ -148,9 +148,26 @@
   # @return [true, false]
   def usable?
     codes.present? && (start_time.present? || end_time.present? || time.present?)
   end
   
+  # Compares hash values to determine equality
+  def ==(other)
+    self.class==other.class && self.hash==other.hash
+  end
+  
+  # Returns the hash value, calculating it if not already done
+  def hash
+    @hash || calculate_hash!
+  end
+  
+  # Calculates a hash value for this entry
+  def calculate_hash!
+    entry_hash = to_hash
+    entry_hash['description']=nil
+    @hash = entry_hash.hash
+  end
+  
   # Creates a Hash for this Entry
   # @return [Hash] a Hash representing the Entry
   def to_hash
     entry_hash = {}
     entry_hash['codes'] = codes
\ No newline at end of file