Consider:
class Note
{
public:
// ...
private:
static const char* const NOTE_NAMES[12] =
{ "C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B" };
}
While it compiles fine, IntelliSense gave me an error:
IntelliSense: a member of type "const char *const [12]" cannot have an in-class initializer
Is this a bug or am I doing something wrong?
According to the C++ Standard
If a non-volatile const static data member is of integral or enumeration type, its declaration in the class definition can specify a brace-or-equal-initializer in which every initializer-clause that is an assignmentexpression is a constant expression
So your code does not satisfy the C++ Standard.
On the other hand
A static data member of literal type can be declared in the class definition with the constexpr specifier; if so, its declaration shall specify a brace-or-equal-initializer in which every initializer-clause that is an assignment-expression is a constant expression
So to get the valid code you should write
static constexpr char* const NOTE_NAMES[12] =
{ "C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B" };