如何声明静态常量数组

Question

我在 class 中用 public 修饰符这样编码：

    static const string brands[] = {"Coca-Cola","Pepsi","Ruffles"};

它给了我这个错误代码：

E1591

我该如何解决？

Answer 1

C++ 的答案是跳过使用 C 数组，它在 C++ 中有限制，但在 C 中不存在，而是使用 std::vector:

static const std::vector<std::string> brands = {"Coca-Cola","Pepsi","Ruffles"};

Note the std:: prefix which should be present as using namespace std can be highly problematic for a variety of reasons, most of all name conflict. The prefix exists for a reason.

Answer 2

据我所知，您的 static const std::string [].

不能有 in-class 初始值设定项

您应该在 class 声明之外对其进行初始化。例如：

#include <string>
class Foo
{
public:
  static const std::string brands[];

};

// in your Foo.cpp file
const std::string Foo::brands[] = {"Coca-Cola","Pepsi","Ruffles"};

如何声明静态常量数组

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