C ++量静态成员数组初始化 [英] C++ const static member array initialization

问题描述

我有类Foo与是一个dynamic_bitset的一个非常大的数组成员变量吧。我想使变量巴静态的内存起见，我也想它是常量。条的值被存储在predefined文件。我应该在哪里放置code文件进行读取和初始化吧？

I have class Foo with a member variable bar which is a very big array of dynamic_bitset. I would like to make variable bar static for the sake of memory, I would also like it to be const. The value of bar is stored in a predefined file. Where should I put the code for reading the file and initializing bar?

推荐答案

MadScienceDreams的解决方案可能会工作，但你可以更简单地做到这一点：

MadScienceDreams's solution will probably work, but you can do this much more simply:

class A
{
     static const vector<dynamic_bitset> s;
public:
     // ...
};

在实现文件

vector<dynamic_bitset> LoadBitsets()
{
    //...
    return something;
}

const vector<dynamic_bitset> A::s(LoadBitsets());

此举构造应该得到自动使用。

The move constructor should get used automatically.

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