signals - Qt Unique connection -

i wondering either there possibility in qt, co create signal-slot connection, automatically break other connections particular slot/ signal? appreciate help.

qt doesn't provide such functionality directly. moreover, it's impossible iterate signal-slot connections, can't implement in general.

what should doing keeping track of connections initiate yourself, , removing them appropriate.

for example:

enum class connectiondisposal { dispose, keep }; class uniqueconnector {   q_disable_copy(uniqueconnector)   qmetaobject::connection m_conn;   connectiondisposal m_cd; public:   explicit uniqueconnector(connectiondisposal cd = connectiondisposal::dispose) :      m_cd(cd) {}   ~uniqueconnector() { if (m_cd == connectiondisposal::dispose) disconnect(); }   template <typename t, typename r>   qmetaobject::connection connect(const qobject * tx, t txf,                                   const qobject * rx, r rxf,                                   qt::connectiontype type = qt::autoconnection) {     qobject::disconnect(m_conn);     return m_conn = qobject::connect(tx, txf, rx, rxf, type);   }   template <typename t, typename r>   qmetaobject::connection connect(const qobject * tx, t txf, r rxf) {     qobject::disconnect(m_conn);     return m_conn = qobject::connect(tx, txf, rxf);   }   bool disconnect() { return qobject::disconnect(m_conn); } }; 

the uniqueconnector allows 1 connection exist on instance. so, each unique connection, need 1 uniqueconnector instance. connection removed upon destruction of connector, unless specify otherwise.