C++ 11中是否有"In class member initialization"功能？

Question

在类初始化功能中,它允许在类本身内初始化普通成员,

struct A {
  int a = 0; // error: ISO C++ forbids in-class initialization of non-const static member ‘a’
};

这在最新的编译器gcc-4.6(with -std=c++0x)中给出了错误.将此功能制作成C++ 11标准还是gcc仍然不支持它？

Answer 1

是的,这在C++ 0x中是合法的.在N3290§12.6.2/ 8中有一个例子:

struct C {
    /* ... */
    int j = 5; // OK: j has the value 5
};