assert.False(t, i.has(4)) // not yet present

	i.decrement(2) // to 0
	i.increment(3) // to 2
	i.decrement(3) // to 1
	i.increment(4) // to 1

	assert.False(t, i.has(1))
	assert.False(t, i.has(2))
	assert.True(t, i.has(3))
	assert.True(t, i.has(4))

	i.reset()
	assert.False(t, i.has(1))
	assert.False(t, i.has(2))
	assert.False(t, i.has(3))
	assert.False(t, i.has(4))

// limitations under the License.

package monitoring

type disabledMetric struct {
	name string
}

// Decrement implements Metric
func (dm *disabledMetric) Decrement() {}

// Increment implements Metric
func (dm *disabledMetric) Increment() {}

// Name implements Metric
func (dm *disabledMetric) Name() string {
	return dm.name
}

// Record implements Metric

		return 0, reedsolomon.ErrShortData
	}

	// Counter to decrement total left to write.
	write := length

	// Counter to increment total written.
	var totalWritten int64

	// Write all data blocks to dst.
	for _, block := range enBlocks[:dataBlocks] {
		// Skip blocks until we have reached our offset.
		if offset >= int64(len(block)) {
			// Decrement offset.
			offset -= int64(len(block))
			continue
		}

            .forEach(snapshot -> {
                String previousWatchedRoot = watchedDirectoryForSnapshot.remove(snapshot.getAbsolutePath());
                decrement(previousWatchedRoot, changedWatchedDirectories);
                snapshot.accept(new SubdirectoriesToWatchVisitor(path -> decrement(path, changedWatchedDirectories)));
            });
        addedSnapshots.stream()
            .filter(watchableHierarchies::shouldWatch)

		delete(s.members, k)
	}
}

// increment adds one to the refcount of the specified id.
// it is not thread-safe.
func (s *intSet) increment(i int) {
	s.members[i]++
}

// decrement removes one from the refcount of the specified id,
// and removes the id if the resulting refcount is <= 0.
// it will not track refcounts lower than zero.
// it is not thread-safe.
func (s *intSet) decrement(i int) {
	if s.members[i] <= 1 {

		//
		//0000z -> decrement ctr, b if ctr != 0 and CRbi == 0
		//0001z -> decrement ctr, b if ctr == 0 and CRbi == 0
		//001at -> b if CRbi == 0
		//0100z -> decrement ctr, b if ctr != 0 and CRbi == 1
		//0101z -> decrement ctr, b if ctr == 0 and CRbi == 1
		//011at -> b if CRbi == 1
		//1a00t -> decrement ctr, b if ctr != 0
		//1a01t -> decrement ctr, b if ctr == 0
		//1z1zz -> b always

    address = InetAddresses.decrement(address);

    assertEquals(address66255, address);

    for (int i = 0; i < 255; i++) {
      address = InetAddresses.decrement(address);
    }
    assertEquals(address660, address);

    InetAddress address0000 = InetAddress.getByName("0.0.0.0");
    assertThrows(IllegalArgumentException.class, () -> InetAddresses.decrement(address0000));
  }

	// attrs stores all attrs for the metrics
	attrs []attribute.KeyValue
	rest  Metric
}

func (f baseMetric) Name() string {
	return f.name
}

func (f baseMetric) Increment() {
	f.rest.Record(1)
}

func (f baseMetric) Decrement() {
	f.rest.Record(-1)
}

func (f baseMetric) runRecordHook(value float64) {
	recordHookMutex.RLock()
	if rh, ok := recordHooks[f.name]; ok {

	BI_FU  = 3
)

// Common values for the BO field.

const (
	BO_ALWAYS  = 20 // branch unconditionally
	BO_BCTR    = 16 // decrement ctr, branch on ctr != 0
	BO_NOTBCTR = 18 // decrement ctr, branch on ctr == 0
	BO_BCR     = 12 // branch on cr value
	BO_BCRBCTR = 8  // decrement ctr, branch on ctr != 0 and cr value
	BO_NOTBCR  = 4  // branch on not cr value
)

// Bit settings from the CR

const (

	var urls = []string{
		"http://www.golang.org/",
		"http://www.google.com/",
		"http://www.example.com/",
	}
	for _, url := range urls {
		// Increment the WaitGroup counter.
		wg.Add(1)
		// Launch a goroutine to fetch the URL.
		go func(url string) {
			// Decrement the counter when the goroutine completes.
			defer wg.Done()
			// Fetch the URL.
			http.Get(url)
		}(url)
	}
	// Wait for all HTTP fetches to complete.