是否可能实现一个类，以这样一种方式，它是可能的值初始化它就像是POD [英] Is it possible to implement a class in such a way that it would be possible to value initialize it as if it was POD

问题描述

我有一个类（让我们把它命名为 TheClass ）在下面的情况下经常使用：几个实例从常量构造，作为几个参数传递给其他构造函数。不幸的是，我必须使用相当繁琐的语法来初始化：

I have a class (let's name it TheClass) that is quite often used in the following situation: several instances are constructed from constants and passed as several arguments to some other constructor. Unfortunately I have to use quite cumbersome syntax for the initialization:

Otherclass{ TheClass{1, 'a', 2}, 
            TheClass{1, 'b', 4},
            TheClass{3, 'h', 2}, 
            TheClass{1, 't', 8} }

有没有办法使初始化类像POD一样？也就是说我想能够写

Is there a way to make it possible to initialize the class as if it was POD? I.e. I want to be able to write

Otherclass{ {1, 'a', 2}, 
            {1, 'b', 4},
            {3, 'h', 2}, 
            {1, 't', 8} }

编辑：我发布了另一个问题，我正面临的问题的正确定义。请参阅是否可以将数据作为initializer_list传递到std ::结构数组？

Edit: I've posted another question with the correct definition of the problem I'm facing. Please see Is it possible to pass data as initializer_list to std::array of structures?

推荐答案

这应该做你想要的。你也可以 typedef TheClass t; 或者定义一个这样的宏： #define _（x）TheClass x code> #undef 之后。

This should do what you want. Alternatively you can typedef TheClass t; or define a macro like this: #define _(x) TheClass x and #undef it afterwards.

#include <initializer_list>
class TheClass {
public:
  TheClass(int x, char y, int z) { }
};

class OtherClass {
public:
  OtherClass(std::initializer_list<TheClass> t) { }
};

int main (int argc, char **argv) {
  OtherClass s { {1,'a',2}, {1, 'b', 4}, {3, 'h', 2}, {1, 't', 8}};
  return 0;
}

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