select now uses Erase-Remove idiom for retired fds

Signed-off-by: Mikael Helbo Kjaer <mhk@designtech.dk>

src/select.cpp

@@ -191,15 +191,8 @@ void zmq::select_t::loop ()
 
         //  Destroy retired event sources.
         if (retired) {
-            fd_set_t::iterator it = fds.begin();
+            fds.erase (std::remove_if (fds.begin (), fds.end (),
-            while (it != fds.end()) {
+                zmq::select_t::is_retired_fd), fds.end ());
-                if (it->fd == retired_fd) {
-                    it = fds.erase(it);
-                }
-                else {
-                    it++;
-                }
-            }
             retired = false;
         }
     }
@@ -209,3 +202,9 @@ void zmq::select_t::worker_routine (void *arg_)
 {
     ((select_t*) arg_)->loop ();
 }
+
+bool zmq::select_t::is_retired_fd (const fd_entry_t &entry)
+{
+    return (entry.fd == retired_fd);
+}
+

src/select.hpp

@@ -77,6 +77,9 @@ namespace zmq
             struct i_poll_events *events;
         };
 
+        //  Checks if an fd_entry_t is retired.
+        static bool is_retired_fd (const fd_entry_t &entry);
+
         //  Set of file descriptors that are used to retreive
         //  information for fd_set.
         typedef std::vector <fd_entry_t> fd_set_t;