静态常量初始化结构数组在C ++类 [英] Static Const Initialised Structure Array in C++ Class

问题描述

我明白，如果我想在C类命名空间的常量数组++，我不能做的：

I understand if I want a const array in a class namespace in C++ I cannot do:

class c
{
private:
  struct p
  {
    int a;
    int b;
  };
  static const p pp[2];
};

const c::p pp[2] =  { {1,1},{2,2} };

int main(void)
{
  class c;
  return 0;
}

我必须做的：

class c
{
public:
  struct p
  {
    int a;
    int b;
  };
  static const p pp[2];
};

const c::p pp[2] =  { {1,1},{2,2} };

int main(void)
{
  class c;
  return 0;
}

但这需要p和PP是公开的，我希望他们是私有的。是否有C ++没有办法初始化私有静态数组？

But this requires "p" and "pp" to be public, when I want them to be private. Is there no way in C++ to initialise private static arrays?

编辑：-------------------
感谢您的答案。此外，我想这个类是一个库，头文件只，由一个主项目中使用。包括多个文件时，包含在错误的多重定义下面的初始化器的效果。

------------------- Thanks for the answers. In addition I want this class to be a library, header files only, for use by a main project. Including the following initialiser results in " multiple definition of " errors when included by multiple files.

const c::p c::pp[2] =  { {1,1},{2,2} };

我该如何解决呢？

How can I solve this?

推荐答案

您先code段工作正常。你只需要将其更改为：

Your first code snippet works fine. You just need to change it to:

const c::p c::pp[2] =  { {1,1},{2,2} };

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