# Aprender { #learn }

Aqui estão as seções introdutórias e os tutoriais para aprender o **FastAPI**.

            // v1 node string follows
            bb.put("\\server1\0".getBytes(StandardCharsets.UTF_16LE));

            // Position for second referral
            bb.position(28); // 8 header + 20 first referral

            // Second Referral v1
            bb.putShort((short) 1); // version
            bb.putShort((short) 22); // size
            bb.putShort((short) 2); // serverType

            ImmutableSet.of(
                // DurationSpec.of(500, MILLISECONDS),
                DurationSpec.of(1, SECONDS), DurationSpec.of(1, DAYS)))
        .withExpireAfterAccesses(
            ImmutableSet.of(
                // DurationSpec.of(500, MILLISECONDS),
                DurationSpec.of(1, SECONDS), DurationSpec.of(1, DAYS)))
        .withRefreshes(
            ImmutableSet.of(

  @GwtIncompatible
  public Class<K> keyType() {
    return keyTypeOrObjectUnderJ2cl;
  }

  /**
   * @serialData the key class, number of entries, first key, first value, second key, second value,
   *     and so on.
   */
  @GwtIncompatible // java.io.ObjectOutputStream
  private void writeObject(ObjectOutputStream stream) throws IOException {
    stream.defaultWriteObject();

import static java.util.concurrent.Executors.newCachedThreadPool;
import static java.util.concurrent.Executors.newSingleThreadExecutor;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.junit.Assert.assertThrows;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.util.concurrent.ListenableFuture;
import java.util.concurrent.CancellationException;

		return nil, nil, err
	}

	// Wait up to 10 seconds for disks to come online.
	pools := obj.(*erasureServerPools)
	t := time.Now()
	for _, pool := range pools.serverPools {
		for _, sets := range pool.erasureDisks {
			for _, s := range sets {
				if !s.IsLocal() {
					for !s.IsOnline() {
						time.Sleep(100 * time.Millisecond)
						if time.Since(t) > 10*time.Second {

        CommonServerMessageBlockRequest second = request.getNext();
        CommonServerMessageBlockRequest third = second.getNext();
        CommonServerMessageBlockRequest fourth = third.getNext();
        boolean firstAllowsSecond = request.allowChain(nextRequest);
        boolean secondAllowsThird = nextRequest.allowChain(thirdRequest);

        // Then
        assertEquals(nextRequest, second);
        assertEquals(thirdRequest, third);

        assertTrue(it.hasNext(), "Iterator should have second element");
        assertSame(fe2, it.next(), "Second element must match first page");

        // Next page fetched via fetchMore()
        assertTrue(it.hasNext(), "Iterator should have third element after fetchMore");
        assertSame(fe3, it.next(), "Third element from second page");

    future.set(1);
    assertEquals(1, future.get(-1, SECONDS).intValue());
  }

  @J2ktIncompatible
  @GwtIncompatible // threads
  public void testOverflowTimeout() throws Exception {
    // First, sanity check that naive multiplication would really overflow to a negative number:
    long nanosPerSecond = NANOSECONDS.convert(1, SECONDS);
    assertThat(nanosPerSecond * Long.MAX_VALUE).isLessThan(0L);

pkg p4, func Clone[$0 interface{ ~[]$1 }, $1 interface{}]($0) $0
pkg p4, func NewPair[$0 interface{ M }, $1 interface{ ~int }]($0, $1) Pair[$0, $1]
pkg p4, method (Pair[$0, $1]) First() $0
pkg p4, method (Pair[$0, $1]) Second() $1