obvious how environment variables would be useful and applicable right away. But they keep showing up in many different scenarios when you are developing, so it's good to know about them.

For example, you will need this information in the next section, about [Virtual Environments](virtual-environments.md)....

}

// Borrowed from rwmutex_test.go
func benchmarkRWMutex(b *testing.B, localWork, writeRatio int) {
	b.ResetTimer()
	b.ReportAllocs()

	b.RunParallel(func(pb *testing.PB) {
		foo := 0
		for pb.Next() {
			rwm := NewDRWMutex(ds, "test")
			foo++
			if foo%writeRatio == 0 {
				rwm.Lock(id, source)
				rwm.Unlock(context.Background())
			} else {
				rwm.RLock(id, source)

         * response will not read a batched command and therefore
         * the 'received' member of the response object will not
         * be set to true indicating the send and sendTransaction
         * methods that the next part should be sent. This is a
         * very indirect and simple batching control mechanism.
         */

        if( andx == null || USE_BATCHING == false ||

	b.ReportAllocs()
	// the actual benchmark for PutObject starts here. Reset the benchmark timer.
	b.ResetTimer()

	b.RunParallel(func(pb *testing.PB) {
		i := 0
		for pb.Next() {
			// insert the object.
			objInfo, err := obj.PutObject(context.Background(), bucket, "object"+strconv.Itoa(i),
				mustGetPutObjReader(b, bytes.NewReader(textData), int64(len(textData)), md5hex, sha256hex), ObjectOptions{})

		if count == 0 {
			break
		}
		if count > maxDeleteList {
			count = maxDeleteList
		}
		_, errs := api.DeleteObjects(ctx, r.Bucket, objsToDel[:count], opts)
		allErrs = append(allErrs, errs...)
		// Next batch of deletion
		objsToDel = objsToDel[count:]
	}

	return allErrs
}

const (
	batchExpireName                 = "batch-expire.bin"
	batchExpireFormat               = 1

import org.dbflute.optional.OptionalThing;
import org.lastaflute.web.login.LoginManager;
import org.lastaflute.web.response.ActionResponse;
import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.response.next.HtmlNext;
import org.lastaflute.web.ruts.process.ActionRuntime;

import jakarta.annotation.Resource;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpSession;

    //                                                                           Attribute
    //                                                                           =========
    // keeping parsed request parameters, normal texts or uploaded files
    // keys are requested parameter names (treated as field name here)
    protected Map<String, Object> elementsAll; // lazy-loaded, then after not null

	}
}

func Test_metacacheReader_next(t *testing.T) {
	r := loadMetacacheSample(t)
	defer r.Close()
	for i, want := range loadMetacacheSampleNames {
		gotObj, err := r.next()
		if err != nil {
			t.Fatal(err)
		}
		if gotObj.name != want {
			t.Errorf("entry %d, want %q, got %q", i, want, gotObj.name)
		}
	}
}

func Test_metacacheReader_peek(t *testing.T) {

   *
   * @since 2.0
   */
  public ImmutableList<E> asList() {
    switch (size()) {
      case 0:
        return ImmutableList.of();
      case 1:
        return ImmutableList.of(iterator().next());
      default:
        return new RegularImmutableAsList<>(this, toArray());
    }
  }

  /**
   * Returns {@code true} if this immutable collection's implementation contains references to

   * ...
   * synchronized (queue) {  // Must synchronize on queue!
   *   Iterator<E> i = queue.iterator(); // Must be in synchronized block
   *   while (i.hasNext()) {
   *     foo(i.next());
   *   }
   * }
   * }</pre>
   *
   * <p>Failure to follow this advice may result in non-deterministic behavior.
   *
   * <p>The returned queue will be serializable if the specified queue is serializable.