}

	if err := tx.Rollback().Error; err != nil {
		t.Fatalf("failed to rollback transaction: %v", err)
	}

	count2, err := gorm.G[User](DB).Where("name like ?", "TestGenericsTransaction%").Count(ctx, "*")
	if err != nil {
		t.Fatalf("Count failed: %v", err)
	}
	if count2 != 0 {
		t.Errorf("expected 0 records after rollback, got %d", count2)
	}
}

#### Http2Connection

This lock guards internal state of each connection. This lock is never held for blocking operations. That means that we acquire the lock, read or write a few fields and release the lock. No I/O and no application-layer callbacks.

#### Http2Stream

    - advanced/events.md
    - advanced/testing-websockets.md
    - advanced/testing-events.md
    - advanced/testing-dependencies.md
    - advanced/async-tests.md
    - advanced/settings.md
    - advanced/openapi-callbacks.md
    - advanced/openapi-webhooks.md
    - advanced/wsgi.md
    - advanced/generate-clients.md
    - advanced/advanced-python-types.md
    - advanced/json-base64-bytes.md
    - advanced/strict-content-type.md

Örneğin, başka bir dependency'de veya bir *path operation* içinde çalışan bir kod, bir veritabanı transaction'ını "rollback" yaptıysa ya da başka bir exception oluşturduysa, o exception dependency'nizde size gelir.

Dolayısıyla `except SomeException` ile dependency içinde o spesifik exception'ı yakalayabilirsiniz.

revocation, rescission, cancellation, termination, or any other legal or
equitable action to disrupt the quiet enjoyment of the Work by the public
as contemplated by Affirmer's express Statement of Purpose.

3. Public License Fallback. Should any part of the Waiver for any reason
be judged legally invalid or ineffective under applicable law, then the
Waiver shall be preserved to the maximum extent permitted taking into

		return 0, buf, fmt.Errorf("decodeXLHeaders: Negative version count %d", versions)
	}
	return versions, buf, nil
}

// decodeVersions will decode a number of versions from a buffer
// and perform a callback for each version in order, newest first.
// Any non-nil error is returned.
func decodeVersions(buf []byte, versions int, fn func(idx int, hdr, meta []byte) error) (e error) {
	var tHdr, tMeta []byte // Zero copy bytes

            accessResult.setStatus(200);
            accessResult.setUrl("http://www.example.com/page" + i);

            dataService.store(accessResult);
        }

        // Test getAccessResultList with callback
        final List<OpenSearchAccessResult> results = dataService.getAccessResultList(builder -> {
            builder.setQuery(QueryBuilders.termQuery("sessionId", sessionId));
            builder.setSize(10);
        });

		},
	}
	DB.Save(&lvl)

	var called int64
	DB.Callback().Query().After("gorm:query").Register("TestPreloadManyToManyCallbacks", func(_ *gorm.DB) {
		atomic.AddInt64(&called, 1)
	})

	DB.Preload("Level2s").First(&Level1{}, "id = ?", lvl.ID)

	if called != 3 {
		t.Errorf("Wanted callback to be called 3 times but got %d", called)
	}

In früheren Versionen von NodeJS / Browser JavaScript hätten Sie „Callbacks“ verwendet. Was zur „Callback-Hölle“ führt.

## Coroutinen { #coroutines }

Якщо ви використовуєте блок `try` в залежності з `yield`, ви отримаєте будь-який виняток, який був згенерований під час використання залежності.

Наприклад, якщо якийсь код десь посередині, в іншій залежності або в *операції шляху*, зробив «rollback» транзакції бази даних або створив будь-який інший виняток, ви отримаєте цей виняток у своїй залежності.

Тож ви можете обробити цей конкретний виняток усередині залежності за допомогою `except SomeException`.