vector<Entity*> Entities;
/* Fill vector here */
vector<Entity*>::iterator it;
for ( it = Entities.begin(); it != Entities.end(); )
if( (*it)->getXPos() > 1.5f )
delete * it;
it = Entities.erase(it);
}
else {
++it;
}
}
原文：http://www.cnblogs.com/learnopencad/p/4061058.html