Examples of util.objects.IntCircularQueue.pollFirst()

util.objects.IntCircularQueue.pollFirst()
{@inheritDoc}This method is the main reason we re-wrote the class. It is optimized for removing first and last elements but also allows you to remove in the middle of the list.

        if (lastProp != null) {
            aid = p2i.get(lastProp.getId());
            if (lastProp.reactToFineEvent()) {
                evtset = eventsets[aid];
                while (evtset.size() > 0) {
                    int v = evtset.pollFirst();
                    eventmasks[aid][v] = 0;
                }
                evtset.clear();
                lastProp.flushPendingEvt();
            }

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                // revision of the variable
                aid = p2i.get(lastProp.getId());
                if (lastProp.reactToFineEvent()) {
                    evtset = eventsets[aid];
                    while (evtset.size() > 0) {
                        int v = evtset.pollFirst();
                        eventmasks[aid][v] = 0;
                    }
                    evtset.clear();
                    lastProp.flushPendingEvt();
                }

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            if (aid > -1) {
                assert aid > -1 : "try to desactivate an unknown constraint";
                // we don't remove the element from its master to avoid costly operations
                IntCircularQueue evtset = eventsets[aid];
                while (evtset.size() > 0) {
                    int v = evtset.pollFirst();
                    eventmasks[aid][v] = 0;
                }
                evtset.clear();
                propagator.flushPendingEvt();
            }

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        //assert schedule_f[aid] : "try to propagate an unscheduled propagator";
        schedule_f[aid] = false;
        if (lastProp.reactToFineEvent()) {
            IntCircularQueue evtset = event_f[aid];
            while (!evtset.isEmpty()) {
                int v = evtset.pollFirst();
                assert lastProp.isActive() : "propagator is not active:" + lastProp;
                if (Configuration.PRINT_PROPAGATION) {
                    Trace.printPropagation(lastProp.getVar(v), lastProp);
                }
                // clear event

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                aid = p2i.get(lastProp.getId());
                scheduled[aid] = 0;
                if (lastProp.reactToFineEvent()) {
                    evtset = eventsets[aid];
                    while (evtset.size() > 0) {
                        int v = evtset.pollFirst();
                        assert lastProp.isActive() : "propagator is not active:" + lastProp;
                        if (Configuration.PRINT_PROPAGATION) {
                            IPropagationEngine.Trace.printPropagation(lastProp.getVar(v), lastProp);
                        }
                        // clear event

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