Re: Is this the wrong way to use std::list?

Salt_Peter <>
Fri, 4 Jan 2008 12:24:45 -0800 (PST)
On Jan 4, 2:26 pm, TBass <> wrote:

So I have a class:

class Client
   unsigned int ClientID;


Lets assume that the compiler generated copy ctor for Client works for

class MyListenSocket
    AddClient( Client *pClient);

It would be interesting to know how you are managing the pointer

    void AddClient( const Client& client ); // much better

    RemoveClient( unsigned int ID );


    std::list<Client> m_listClients;


To add clients to the list, AddClient is called:

MyListenSocket::AddClient( Client *pClient )
     m_listClients.push_back( *pClient );


But a client can be erased from anywhere on the list. I wrote this

MyListenSocket::RemoveClient( unsigned int ID )

void MyListenSocket::RemoveClient( const unsigned id )

                std::list<Client>::iterator it;

                  typedef std::list<Client>::iterator LIter;
                  LIter it;

                for( it = m_listClients.begin();
                        it != m_listClients.end();
                        ++it )
                        if ( it->ClientID() == ID )
                                m_listClients.erase( it );


The problem is that this seems to corrupt the heap in my program. I
know that the iterator is corrupted when I use the erase command, but
why would that corrupt the heap?

The iterator is not corrupted, it gets invalidated. Your free store is
suffering from something else.
i'ld probably use a std::set instead of a std::list.

Is this not the way to delete an item from the middle of a list?
Should I not be using ::list for this type of purpose?

Thanks in advance,
Tom Junior

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