Question

I am writing a server in C++ and created a class called client to store information about connected clients. I wanted to store the clients in a vector. I have a call

clients.push_back(new client(addr,fd));

to add a client object to the vector clients. I get the following error on compile

server.cpp:67: error: no matching function for call to ‘std::vector<client, std::allocator<client> >::push_back(client*)

I think it has something to do with my misunderstanding of the new keyword and how data is stored/moved in C++. I come from a Java background, so I am not use to pointers and memmory stuff of C++.

Answer 1

You almost certainly just want to get rid of the new so it’s:

clients.push_back(client(addr, fd));

In Java you have to explicitly new all your objects, but in C++ you not only don’t need to, but generally want to avoid it when/if at all reasonable.