class 个实例的 C++/ 向量作为另一个 class 的属性

Question

我正在尝试创建具有私有属性 _testItems 的 class (PgWeightTestItemSet)。 _testItems 是另一个 class (PgWeightTestItem) 实例的 std::vector。

Header for PgWeightTestItem 包含在 PgWeightTestItemSet.h.

我在 Arduino 中进行代码检查后 IDE 出现错误：

error: 'PgWeightTestItem' was not declared in this scope std::vector <PgWeightTestItem> _testItems;

所以我的问题是：

是否可以将 class 个实例的向量声明为另一个 class
如果可能的话，我做错了什么？

代码如下：

PgWeightTestItemSet.h

#ifndef PgWeightTestItemSet_h
#define PgWeightTestItemSet_h

#include "Arduino.h"
#include <PgWeightTestItem.h>

class PgWeightTestItemSet {

public:
    PgWeightTestItemSet(std::vector<float> & referenceAv, std::vector<float> & referenceMin, std::vector<float> & referenceMax, bool cumulative);

    /*other public properties and methods*/

private:       
    std::vector <PgWeightTestItem> _testItems;

    /*other private properties and methods*/
};

#endif

PgWeightTestItem.h

#ifndef PgWeightTestItem_h
#define PgWeightTestItem_h

#include "Arduino.h"

class PgWeightStandards {

public:
    PgWeightStandards(float & referenceAv, float & referenceMin, float & referenceMax);

    /*public properties*/

private:
    /*private properties*/
};

#endif

Arduino_project.ino

#include <PgWeightTestItemSet.h>
//other arduino code bellow

目录结构

/root/
/root/Projects/ArduinoProject/Arduino_project.ino
/root/libraries/PgWeightTestItem/
/root/libraries/PgWeightTestItem/PgWeightTestItem.h
/root/libraries/PgWeightTestItem/PgWeightTestItem.cpp
/root/libraries/PgWeightTestItemSet/
/root/libraries/PgWeightTestItem/PgWeightTestItemSet.h
/root/libraries/PgWeightTestItem/PgWeightTestItem.cpp

Answer 1

您在 PgWeightTestItem.h 中定义的 class 称为 PgWeightStandards 而不是 PgWeightTestItem。通过重命名其中一个，你应该没问题。 PgWeightTestItem.h 可以如下：

#ifndef PgWeightTestItem_h
#define PgWeightTestItem_h

#include "Arduino.h"

class PgWeightTestItem {

public:
    PgWeightTestItem(float & referenceAv, float & referenceMin, float & referenceMax);

    /*public properties*/

private:
    /*private properties*/
};

#endif

class 个实例的 C++/ 向量作为另一个 class 的属性

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class 个实例的 C++/ 向量作为另一个 class 的 属性

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class 个实例的 C++/ 向量作为另一个 class 的属性