Qt开发,一行代码报错: reference to non-static member function must be called; did you mean to call it with no arguments? 代码: if(tbxD.toPlainText().trimmed().length==0) { ... } if(tbxM.toPlainText().trimmed().length==0) { ... } if(tbxS.toPlainText().trimmed().length==0)...
使用sort函数的时候因为自己要定义compare,但是会报错error: reference to non-static member function must be called。 解决方案: compare函数前面加个static就可。这题是力扣205题,题源: 力扣leetcode-cn.com/problems/isomorphic-strings/ classSolution{public:structST{charch1;charch2;};staticboolcmp1(struc...
Whenever I attempt to build it I get these messages /home/kiwifruit555/Documents/kUwU/Web/mainwindow.cpp:12: error: invalid use of non-staticmember function ‘voidQWebEnginePage::featurePermissionRequested(constQUrl&, QWebEnginePage::Feature)’ ../Web/mainwindow.cpp: In constructor ‘MainWind...
}booliseven(intn){//这里有误,应改成staticreturn(n&0x1)==0; } }; 添加static,完美解决: classSolution{public:vector<int>exchange(vector<int>& nums){returnReOrder(nums,iseven); }vector<int>ReOrder(vector<int>& nums,bool(*func)(int)){ ... }staticbooliseven(intn){return(n&0x1)==0;...
参考文章 https://blog.csdn.net/qq_26849233/article/details/77930991 之前写多线程函数getData 在main中调用时, std:thread t(getData) getData的实现是 void getData(){ } 但是如果是在一个类的构造方法中调用时,这样写就会报错,reference to non-static member function must be called ...
是因为此时智能指针m_p的处理函数是一个类中的成员函数unlock,且传给智能指针的也是一个函数指针,但是要调用成员函数的话,是需要通过类的实例对象来进行的,而在智能指针中调用的时候,是没有这个实例对象存在的,结果就挂了。 参考:http://stackoverflow.com/questions/22513680/non-static-member-function-must-be-...
题目很简单,利用lowbit操作计算一个数二进制1的个数,接着自定义比较函数进行排序即可,但是C++在类中自定义比较函数不能简单地定义为成员函数,需要定义为静态成员函数。 具体看:Reference to non-static member function must be called
How would I go about to fix this error? The error occurs at line 60 with the message "error: reference to non-static member function must be called; did you mean to call it with no arguments?". 1 2 3 4 5 6 7 8 9 10
sss class at "int y" and the class ddd "char * ps" I do not want to have access to a class of names. but gives this error "illegal reference to non-static member" when I do static variables.problem solved. How do I solve this problem. ...
意思是你访问某个类的某个非静态成员的时候没有指定对象。正确引用非静态数据成员的语法是: 对象名.成员名 或者 对象指针->成员名 我估计你大概是定义了一个静态成员函数,并且在该函数内部引用了一个非静态成员,但是你引用的时候没有指定对象,所以编译器报错。