Naming

• Use CamelCase in general:

  class MyClass
  {
  public:
    void doWork ();
  
  protected:
    bool enabled;
    int currentState;
  };
  

• Data types (classes, enumerations) start with an uppercase letter.

  • Exception: simple data types like int32, float64, etc.;

• Variable names start with a lowercase letter.

  // Right
  bool enabled;
  
  // Wrong
  bool Enabled;
  

  • Exception: The upper case “This” is a viable variable name.

• Constants and enumerators start with the letter k:

  static const int kSomeConstant = 123;
  

• Do not use any kind of prefixing for data members (Hungarian notation, C-style prefixes, etc…), except k for constants.

  // Right
  Object* object;
  
  // Wrong
  Object* pObject;
  

• Avoid “is” for bool data members as it’s mostly used for methods:

  // Right
  bool enabled;
  
  // Wrong
  bool isEnabled;
  

• Do not use class name prefixes (C, P, F, etc.)

• Use I to prefix interfaces

• Choose natural identifiers:

  • Avoid abbreviations.

  • Acronyms are allowed.

  • Function names usually start with a verb like “get”, “set”, etc.

  • Single character variable names like i, a, b, c, are allowed.

  // Right
  getValue ()
  value
  
  // Wrong
  getVal ()
  val
  

• Acronyms:

  • Use uppercase in type.

  • Use uppercase in method names.

  • Use lowercase for members and variables.

  // Right
  NoteID noteId;
  NoteID getNoteID () const;
  
  // Wrong
  NoteId noteID;
  NoteId getNoteId () const;
  
  // Right
  URL url;
  URL getUrl () const;
  
  // Wrong
  Url url;
  Url getURL () const;