C++ Macros

#define DISALLOW_COPY_AND_ASSIGN(TypeName)    \
  TypeName(const TypeName&);                  \
  void operator=(const TypeName&)

#define ARRAYSIZE(a)            \
  ((sizeof(a) / sizeof(*(a))) / \
   static_cast<size_t>(!(sizeof(a) % sizeof(*(a)))))

#define GTEST_COMPILE_ASSERT_(expr, msg) \
  typedef ::testing::internal::CompileAssert<(bool(expr))> \
      msg[bool(expr) ? 1 : -1]