C ++ /類實例的矢量作為另一個類的屬性

Question

我正在嘗試創建具有私有屬性_testItems的類（PgWeightTestItemSet）。 _testItems是另一個類（PgWeightTestItem）實例的std :: vector。

PgWeightTestItemSet.h中包含PgWeightTestItem的標題。

我在Arduino IDE中進行代碼檢查后，出現錯誤：

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

所以我的問題是：

• 是否可以將類實例的矢量聲明為另一個類的屬性
• 如果有可能，我在做什么錯？

代碼如下：

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

目錄結構

/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中定義的類稱為PgWeightStandards而不是PgWeightTestItem 。 通過重命名其中之一，就可以了。 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