deque-blog/add_constexpr.cpp

## add_constexpr.cpp
// Both a function and meta-function
constexpr int add_constexpr(int a, int b)
{
  return a + b;
}

// Compute the value at compile time
add_constexpr(1, 2);
	// Both a function and meta-function
	constexpr int add_constexpr(int a, int b)
	{
	return a + b;
	}

	// Compute the value at compile time
	add_constexpr(1, 2);