If I comment out the the 3 lines in the StarSystem Constructor that create objects, then it compiles, so I know this has to do with the issue. #include<iostream>#include<vector>#include<string>#include<stdlib.h>#includeusingnamespacestd;classSystemBody{public:SystemBody();intsystembodyindex...
#include "cola.h" #include "nodo_colaypila.h" #include <iostream> using namespace std; template <class T> cola<T>::cola() { pri = NULL; ult = NULL;//ctor } template <class T> void cola<T>::anade(T& valor) { nodo_colaypila <T> * nuevo; if (ult) { nuevo = new nodo_...
参考:http://stackoverflow.com/questions/8752837/undefined-reference-to-template-class-constructor 我的理解: 像之前一样把函数声明和定义分离,却遇到了很奇怪的错误。Google之后才知道:模板类只是告诉了编译器如何去生成类,并没有生成类,在编译main.cpp的时候,生 成List<QUADPTR>类时,其中的函数因为在list.h中...
D:/Coding/CG/Assignment0/TestVec/main.cpp:22: undefined reference to `Vector3f::Vector3f(float, float, float)' Actually that is not compile error, it is a linker error. This error is telling you that the linker can't find the implementation of that function. Did you write the code fo...
最近想写个demo验证Qt connect在第五个参数不同的情况下,各自槽函数运行在哪个线程中。为了简便,就没有创建.h和.cpp文件,直接在main函数中写的,结果在运行时就出现了 undefined reference to `vtable for * * * '这种错误。 代码如下: class SendMsg : public QObject ...
虚函数问题引起的调用错误。class Player 含虚函数 virtual unsigned int getId();和纯虚函数 virtual unsigned int toss( Potato &potato ) = 0;所以它是 “抽象类”你必须要 以它为基函数，写一个 派生类，重写 虚函数，写构造函数(constructor)和析构函数等。调用 派生类 的与它们同名的函数。
undefined reference to `Card::Card(int,int)这种提示表示，card:card()没有定义。有两种情况，一种是没有写代码。另一种是没有链接包含Card::Card函数的库。编译未成功。你有两个主要错误：1 你的静态数组没有实例化就在初始化函数中赋值了。2 提示undefined reference to `Card::Card(int,int)...
TypeError: Class extends value undefined is not a constructor or null at Object.<anonymous>(/usr/local/lib/node_modules/npm/node_modules/socks-proxy-agent/dist/agent.js:114:44) at Module._compile (node:internal/modules/cjs/loader:1101:14) ...
class Quiz extends Component { // Added this: constructor(props) { super(props); // Assign state itself, and a default value for items this.state = { items: [] }; } componentWillMount() { axios.get('/thedata').then(res => { ...
15:17:17 [vite] Error when evaluating SSR module /@fs/{pathToRepo}/.angular/cache/18.1.0/vite/deps_ssr/@angular_fire_firestore.js?v=de27081b: |- TypeError: Class extends value undefined is not a constructor or null at node_modules/@firebase/auth/node_modules/undici/lib/fetch/file.js...