Question

我将vector传递给对象中的函数时遇到问题。

我的vector

的定义

class PrintRectangle : public QWidget
{
    Q_OBJECT
public:
    explicit PrintRectangle(QWidget *parent = 0);

public:
    teacher *tech;
    bool clicked[5][5] = {};
    std::vector<std::vector<perceptron>> p;
}

实施

PrintRectangle::PrintRectangle(QWidget *parent) : QWidget(parent),
    p(5, std::vector<perceptron>(5))
{
    tech = new teacher(clicked);

    for(int i=0; i<5; i++)
    {
        for(int j=0; j<5; j++)
        {
            p[i][j].randweight();
        }
    }
    double learnConst = 0.1;
    tech->learnPerceptrons(p);
}

我在tech->learnPerceptrons(p);

中收到错误消息

E:\Sieci Neuronowe\Perceptron\printrectangle.cpp:20: error: no matching function for call to 'teacher::learnPerceptrons(std::vector<std::vector<perceptron> >&)'
     tech->learnPerceptrons(p);
                             ^

我在teacher类

中的函数定义

void learnPerceptrons(std::vector<std::vector<perceptron>> &p)

问题出在哪里？我应该以不同的方式创建teacher类的对象吗？

所有错误：

  ../../Sieci Neuronowe/Perceptron/printrectangle.cpp: In constructor 'PrintRectangle::PrintRectangle(QWidget*)':
../../Sieci Neuronowe/Perceptron/printrectangle.cpp:19:29: error: no matching function for call to 'teacher::learnPerceptrons(std::vector<std::vector<perceptron> >&)'
     tech->learnPerceptrons(p);
                             ^
In file included from E:/Sieci Neuronowe/Perceptron/printrectangle.h:6:0,
                 from ../../Sieci Neuronowe/Perceptron/printrectangle.cpp:1:
E:/Sieci Neuronowe/Perceptron/teacher.h:20:10: note: candidate: void teacher::learnPerceptrons(std::vector<std::vector<teacher::perceptron> >&)
     void learnPerceptrons(std::vector<std::vector<perceptron>> &p);
          ^
E:/Sieci Neuronowe/Perceptron/teacher.h:20:10: note:   no known conversion for argument 1 from 'std::vector<std::vector<perceptron> >' to 'std::vector<std::vector<teacher::perceptron> >&'
../../Sieci Neuronowe/Perceptron/printrectangle.cpp:17:12: warning: unused variable 'learnConst' [-Wunused-variable]
     double learnConst = 0.1;
            ^
Makefile.Debug:833: recipe for target 'debug/printrectangle.o' failed
mingw32-make[1]: Leaving directory 'E:/nienazwany/build-nienazwany-Desktop_Qt_5_7_0_MinGW_32bit-Debug'
mingw32-make[1]: *** [debug/printrectangle.o] Error 1

以及所有代码https://github.com/lukaszog/Perceptron

Answer 1

您在帖子中提到：

我在老师班的功能定义

void learnPerceptrons（std :: vector＆gt;＆amp; p）

但是，您的teacher class on github有void learnPerceptrons(perceptron * (&array)[5][5]);方法，而不是learnPerceptrons(std::vector<std::vector<perceptron>> &p) ....这一定是问题......

Answer 2

错误日志显示perceptron也在teacher声明：

E:/Sieci Neuronowe/Perceptron/teacher.h:20:10: note:   no known conversion for 
argument 1 from 'std::vector<std::vector<perceptron> >' to 'std::vector<std::vector<teacher::perceptron> >&'

此perceptron在learnPerceptrons()

的声明中被采用

使用对象无匹配函数错误将2d向量传递给函数

2 个答案: