import com.google.errorprone.annotations.Immutable;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Map.Entry;

/** A {@code RegularImmutableTable} optimized for sparse data. */
@GwtCompatible
@Immutable(containerOf = {"R", "C", "V"})
final class SparseImmutableTable<R, C, V> extends RegularImmutableTable<R, C, V> {
  static final ImmutableTable<Object, Object, Object> EMPTY =

\"scale\":{\"type\":\"linear\",\"mode\":\"normal\"},\"labels\":{\"show\":true,\"rotate\":0,\"filter\":false,\"truncate\":100},\"title\":{\"text\":\"Query Count\"}}],\"seriesParams\":[{\"show\":\"true\",\"type\":\"histogram\",\"mode\":\"stacked\",\"data\":{\"label\":\"Query Count\",\"id\":\"1\"},\"valueAxis\":\"ValueAxis-1\",\"drawLinesBetweenPoints\":true,\"showCircles\":true}],\"addTooltip\":true,\"addLegend\":true,\"legendPosition\":\"right\",\"times\":[],\"addTimeMarker\":false,\"dimensions\"...

		}
	}
	defer syscall.Close(fd)

	bufp := direntPool.Get()
	defer direntPool.Put(bufp)
	buf := *bufp

	boff := 0 // starting read position in buf
	nbuf := 0 // end valid data in buf

	for {
		if boff >= nbuf {
			boff = 0
			stop := globalOSMetrics.time(osMetricReadDirent)
			nbuf, err = syscall.ReadDirent(fd, buf)
			stop()
			if err != nil {
				if isSysErrNotDir(err) {

		}
	}
}

func TestParseReleaseData(t *testing.T) {
	releaseTime, _ := releaseTagToReleaseTime("RELEASE.2016-10-07T01-16-39Z")
	testCases := []struct {
		data                string
		expectedResult      time.Time
		expectedSha256hex   string
		expectedReleaseInfo string
		expectedErr         bool
	}{
		{"more than two fields", time.Time{}, "", "", true},

* `id`
* `name`
* `age`
* `secret_name`

{* ../../docs_src/sql_databases/tutorial002_an_py310.py ln[7:14] hl[12:14] *}

#### `HeroPublic` - el *modelo de datos* público { #heropublic-the-public-data-model }

A continuación, creamos un modelo `HeroPublic`, este es el que será **devuelto** a los clientes de la API.

Tiene los mismos campos que `HeroBase`, por lo que no incluirá `secret_name`.

            assertDoesNotThrow(() -> context.encode(smallBuffer, 4));
        }

        @Test
        @DisplayName("Should preserve data integrity through encode/decode cycle")
        void testDataIntegrity() throws SMBProtocolDecodingException {
            // Create complex test data
            int[] hashAlgos = new int[20];
            byte[] salt = new byte[64];
            SecureRandom random = new SecureRandom();

 * the columns. The reverse is also available, associating a column with a row key / value map. Note
 * that, in some implementations, data access by column key may have fewer supported operations or
 * worse performance than data access by row key.
 *
 * <p>The methods returning collections or maps always return views of the underlying table.

        // Verify total length includes scope
        assertEquals(33 + name.scope.length() + 2, length);
    }

    @Test
    void readWireFormat_shouldDecodeNameCorrectly() {
        // Prepare encoded data for "TEST" with type 0x20
        byte[] src = new byte[100];
        src[0] = 0x20; // First byte

        // Encode "TEST" (0x54 0x45 0x53 0x54)
        // T=0x54: upper nibble 0x5->F(0x46), lower nibble 0x4->E(0x45)

        }

        @Test
        void parameters() {
            assertEquals(0, cmd.readParametersWireFormat(new byte[10], 0, 0));
        }

        @Test
        void data() {
            assertEquals(0, cmd.readDataWireFormat(new byte[10], 0, 0));
        }
    }

    @Test
    @DisplayName("toString format")
    void testToString() throws Exception {

Таким образом, его схема появится в интерфейсе документации API:

<img src="/img/tutorial/dataclasses/image01.png">

## Dataclasses во вложенных структурах данных { #dataclasses-in-nested-data-structures }

Вы также можете комбинировать `dataclasses` с другими аннотациями типов, чтобы создавать вложенные структуры данных.