我在'Serializer'类中使用共享指针时收到错误。
这是我的详细错误:
client.h:28:52: error: expected identifier before new
std::shared_ptr<Serializer> serializerObj2(new Serializer);
^
client.h:28:52: error: expected , or .. before new
这是我的最小代码:
std::shared_ptr<Serializer> serializerObj2(new Serializer);
这是我的扩展代码:
#include "serializer.h"
#include<iostream>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<unistd.h>
#include<stdlib.h>
#include<thread>
#include<string>
#include<cstring>
#include<utility>
#include <boost/filesystem.hpp>
#include<memory>
namespace TCP
{
class Client
{
public:
void start();
private:
int networkSocket=socket(AF_INET,SOCK_STREAM,0);
std::shared_ptr<Serializer> serializerObj2(new Serializer);
std::shared_ptr<Serializer> serializerObj=std::make_shared<Serializer>();
bool checkConnection();
std::pair<bool,std::string>getFile();
void sendMessage();
void setMessage();
};
}//closes namespace `
这是我的Serializer h文件:
#ifndef D_SERIALIZER_H
#define D_SERIALIZER_H
#include<iostream>
#include<arpa/inet.h>
#include<string>
namespace TCP
{
class Serializer
{
public:
//sender
void addIntToStream(int);
void addStringToStream(std::string);
void addCharToStream(char);
std::pair<bool,const char*>getStream(size_t requestSize_);
void delStream(size_t deleteSize_);
//receiver
void addByteToStream(const char*,size_t);
std::pair<bool,int> retrieveIntFromStream();
std::pair<bool,char> retrieveCharFromStream();
std::pair<bool,std::string> retrieveStringFromStream(int);
Serializer()
{
_stream="";
_it=_stream.begin();
}
private:
std::string _stream;
std::string::iterator _it;
};
} //closes namespace
#endif
答案 0 :(得分:3)
class Serializer
{
public:
std::shared_ptr<Serializer> serializerObj2(new Serializer);
这是类中的变量声明。
传统上,它们只能在构造函数中初始化。
但是,从C ++ 11开始,它们也可以使用
type var = value;
语法。你不能在那里使用括号,因为那将被解析 作为功能声明。所以改成它:
std::shared_ptr<Serializer> serializerObj2 = new Serializer;