我开始编写Angular 2,我遇到了一个错误:
ts1206装饰器在这里无效
@Component({ // ts1206 decorators are not valid here
selector: 'my-app',
moduleId: module.id,
templateUrl: 'app.component.html',
styleUrls: ['app.component.css']
})
更新:
我的tsconfig.json:
{
"compilerOptions": {
"target": "es5",
"module": "commonjs",
"moduleResolution": "node",
"sourceMap": true,
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"removeComments": false,
"noImplicitAny": true,
"suppressImplicitAnyIndexErrors": true
}
}
我该怎么办？
我是c ++的一个初学者,我试图创建一个对象,但我得到一个错误,我不明白什么是错的.我得到错误时这是我的hpp文件+ cpp文件:
Manager::Manager(const Manager &manager ) :
Worker(manager.name,manager.id,manager.salary){
this->workers=manager.workers;
}
class Manager:public Worker {
private:
std::vector<Worker> workers;
public:
Manager(const char* name, int id, int salary);
Manager(const Manager &manager );
};
错误:
In file included from Manager.hpp:5:0,
from Manager.cpp:1:
Worker.hpp:7:7: note: ‘Worker& Worker::operator=(const Worker&)’ is implicitly deleted because the default definition would be ill-formed:
class Worker{
但是,当我这样做它工作:
Manager::Manager(const Manager &manager ) :
Worker(manager.name,manager.id,manager.salary), workers(manager.workers){
}
有人可以告诉我为什么？
编辑:
这是worker类代码:
这是worker.hpp
class Worker{
protected:
const std::string name;
const int id;
int salary; …我在考试中看到了这段代码:问题是这个字符串的打印次数.
我首先想到它会是10次,但这是错误的.有人能告诉我为什么我的答案是错的.这是C语言代码的一部分.
for (float x = 100000001.0f; x <= 100000010.0f; x += 1.0f) {
printf("lbc");
}
我写的类有错误,我不明白是什么问题.
这是工人阶级:
#ifndef __Worker__
#define __Worker__
#include <iostream>
#include <string>
class Worker{
protected:
std::string name;
int id;
int salary;
public:
Worker(const std::string& name, int id, int salary);
Worker(const Worker& worker );
friend std::ostream& operator<<(std::ostream& os, const Worker& w);
int getWorkerID(){
return this->id;
}
int getsSalary(){
return this->salary;
}
std::string getname(){
return this->name;
}
};
#endif
这是这个类的实现:
#include "Worker.hpp"
Worker::Worker(const std::string &names, int ids, int salarys) :
name(names), id(ids), salary(salarys)
{
}
Worker::Worker(const Worker &worker):
name(worker.name), id(worker.id), salary(worker.salary)
{
}
std::ostream& …我刚刚开始学习cpp.我创建了一个包含2个构造函数的类.当我在ubuntu上运行此命令时: g++ -Wall -g main.cpp car.cpp -o a
我收到错误按摩:
> "In file included from main.cpp:2:0: car.h:10:15:
error: expected ‘)’ before ‘,’ token car(string,string,int);
In file included from car.cpp:1:0: car.h:10:15:
error: expected ‘)’ before ‘,’ token car(string,string,int);
car.cpp:10:9: error: expected constructor, destructor, or type conversion before ‘(’ token car::car(string brand, string color, int cost){ "
我不明白为什么我收到此错误信息,我的代码有什么问题？请帮我.
这是我的代码:
这是一个h文件
#include <iostream>
#include <string>
#pragma once
class car{
public:
car();
car(string,string,int);
int get_cost();
std::string get_brand();
std::string get_color();
private:
std::string newbrand;
std::string newcolor;
int …