}
}

func TestDeeplyNestedTransactionWithBlockAndWrappedCallback(t *testing.T) {
	transaction := func(ctx context.Context, db *gorm.DB, callback func(ctx context.Context, db *gorm.DB) error) error {
		return db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
			return callback(ctx, tx)
		})
	}
	var (
		user  = *GetUser("transaction-nested", Config{})
		user1 = *GetUser("transaction-nested-1", Config{})

	if modTime.IsZero() || modTime.Equal(timeSentinel) {
		etags := listObjectETags(partsMetadata, errs, quorum)

		etag = commonETag(etags, quorum)

		if etag != "" { // allow this fallback only if a non-empty etag is found.
			for index, e := range etags {
				if partsMetadata[index].IsValid() && e == etag {
					onlineDisks[index] = disks[index]
				} else {
					onlineDisks[index] = nil
				}

    var exception: Exception? = null
    val latch = CountDownLatch(1)

    // assumes an IPv4 address
    AndroidAsyncDns.IPv4.query(
      hostname,
      object : AsyncDns.Callback {
        override fun onResponse(
          hostname: String,
          addresses: List<InetAddress>,
        ) {
          allAddresses.addAll(addresses)
          latch.countDown()
        }

		case <-ctx.Done():
			r.err = ctx.Err()
			return ctx.Err()
		case dst <- meta:
		}
	}
}

// readFn will return all remaining objects
// and provide a callback for each entry read in order
// as long as true is returned on the callback.
func (r *metacacheReader) readFn(fn func(entry metaCacheEntry) bool) error {
	r.checkInit()
	if r.err != nil {
		return r.err
	}
	if r.current.name != "" {

Dans les versions précédentes de Javascript NodeJS / Navigateur, vous auriez utilisé des "callbacks". Menant potentiellement à ce que l'on appelle <a href="http://callbackhell.com/" class="external-link" target="_blank">le "callback hell"</a>.


## Coroutines

// required except where indicated.
typedef struct TFE_CustomDeviceTensorHandleMethods {
  int version = TFE_CUSTOM_DEVICE_VERSION;

  // Computes the rank of the tensor handle.
  //
  // Shapes are specified via callbacks because retrieving the shape of a tensor
  // is a blocking operation for async eager; custom devices should avoid
  // retrieving shapes of tensors they wrap until the custom device tensor's

echo location of your Java installation. >&2
echo. >&2
goto error

@REM ==== END VALIDATION ====

:init

@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
@REM Fallback to current working directory if not found.

set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir

set EXEC_DIR=%CD%
set WDIR=%EXEC_DIR%
:findBaseDir

	log.SetPrefix("go_ios_exec: ")
	if debug {
		log.Println(strings.Join(os.Args, " "))
	}
	if len(os.Args) < 2 {
		log.Fatal("usage: go_ios_exec a.out")
	}

	// For compatibility with the old builders, use a fallback bundle ID
	bundleID = "golang.gotest"

	exitCode, err := runMain()
	if err != nil {
		log.Fatalf("%v\n", err)
	}
	os.Exit(exitCode)
}

func runMain() (int, error) {
	var err error

   *
   * <p><b>Note:</b> if {@code first} is represented as an {@link Optional}, this can be
   * accomplished with {@link Optional#or(Object) first.or(second)}. That approach also allows for
   * lazy evaluation of the fallback instance, using {@link Optional#or(Supplier)
   * first.or(supplier)}.
   *
   * <p><b>Java 9 users:</b> use {@code java.util.Objects.requireNonNullElse(first, second)}
   * instead.
   *

// Set XLA's internal BuildXlaOpsPassFlags.tf_xla_enable_lazy_compilation to the
// value of 'enabled'. Also returns the original value of that flag.
//
// Use in tests to allow XLA to fallback to TF classic. This has global effect.
TF_CAPI_EXPORT unsigned char TF_SetXlaEnableLazyCompilation(
    unsigned char enable);
TF_CAPI_EXPORT unsigned char TF_SetTfXlaCpuGlobalJit(unsigned char enable);