# Usage

```go
package main

import (
	"fmt"

	"github.com/smallnest/ringbuffer"
)

func main() {
	rb := ringbuffer.New(1024)

	// write
	rb.Write([]byte("abcd"))
	fmt.Println(rb.Length())
	fmt.Println(rb.Free())

	// read
	buf := make([]byte, 4)
	rb.Read(buf)
	fmt.Println(string(buf))
}
```

It is possible to use an existing buffer with by replacing `New` with `NewBuffer`.

                  @Override
                  protected Set<AnEnum> create(AnEnum[] elements) {
                    AnEnum[] otherElements = new AnEnum[elements.length - 1];
                    arraycopy(elements, 1, otherElements, 0, otherElements.length);
                    return Sets.immutableEnumSet(elements[0], otherElements);
                  }
                })
            .named("Sets.immutableEnumSet")

  }

  private static final Comparator<String> DEGENERATE_COMPARATOR =
      new Comparator<String>() {
        @Override
        public int compare(String o1, String o2) {
          return o1.length() - o2.length();
        }
      };

  /** Test a TreeMultiset with a comparator that can return 0 when comparing unequal values. */
  public void testDegenerateComparator() throws Exception {

    return SetTestSuiteBuilder.using(
            new TestEnumSetGenerator() {
              @Override
              public Set<AnEnum> create(AnEnum[] elements) {
                return (elements.length == 0)
                    ? EnumSet.noneOf(AnEnum.class)
                    : EnumSet.copyOf(MinimalCollection.of(elements));
              }
            })
        .named("EnumSet")
        .withFeatures(

}

func (d *naughtyDisk) ReadFileStream(ctx context.Context, volume, path string, offset, length int64) (io.ReadCloser, error) {
	if err := d.calcError(); err != nil {
		return nil, err
	}
	return d.disk.ReadFileStream(ctx, volume, path, offset, length)
}

func (d *naughtyDisk) CreateFile(ctx context.Context, origvolume, volume, path string, size int64, reader io.Reader) error {

        final Set<String> roleSet = ComponentUtil.getRoleQueryHelper().build(searchRequestType);
        if (roleSet.isEmpty()) {
            for (final LabelTypeItem item : labelList) {
                if (item.getPermissions().length == 0) {
                    final Map<String, String> map = new HashMap<>(2);
                    map.put(Constants.ITEM_LABEL, item.getLabel());
                    map.put(Constants.ITEM_VALUE, item.getValue());

                return;
            }
        }

        if (logger.isDebugEnabled()) {
            logger.debug("role: original: {}, decrypto: {}", value, rolesStr);
        }

        if (valueSeparator.length() > 0) {
            final String[] values = rolesStr.split(valueSeparator);
            if (maxAge > 0) {
                try {
                    final long time = getCurrentTime() / 1000 - Long.parseLong(values[0]);

                RenderDataUtil.register(data, "relatedContents", relatedContents);
                final String[] relatedQueries = relatedQueryHelper.getRelatedQueries(form.getQuery());
                if (relatedQueries.length > 0) {
                    RenderDataUtil.register(data, "relatedQueries", relatedQueries);
                }
            });
        } catch (final InvalidQueryException e) {
            if (logger.isDebugEnabled()) {

                throw e;
            }
        }
    }


    @Test
    public void testShareSize () throws IOException {
        try ( SmbResource f = getDefaultShareRoot() ) {
            long l = f.length();
            Assume.assumeTrue("No share size reported", l != 0);
        }
    }


    @Test
    public void testShareFreeSize () throws IOException {

                if ("cache".equalsIgnoreCase(value)) {
                    return true;
                }
            }
            // backward compatibility
            if (values.length == 1 && Constants.TRUE.equalsIgnoreCase(values[0])) {
                return true;
            }
            return false;
        }

        public boolean isOverwrite() {