AddWithComplete

AddWithComplete is a method pattern used in software libraries to perform an addition operation together with a completion step. The name signals two phases: adding the item and invoking a completion callback once the operation finishes. It is commonly found in asynchronous or event-driven contexts where subsequent work depends on the outcome of the add.

In typical usage, the method accepts the item to be added and a completion handler. The completion handler is invoked after the add operation completes, and it usually conveys status (success or error) and may return information such as the added item’s identifier or a result object. Some implementations also allow options such as the execution context (thread or queue), retry policy, or metadata.

Common use cases include adding records to a local or remote data store, enqueuing tasks, caching items, or updating user interfaces that must reflect the new state only after the addition is confirmed. The pattern helps coordinate asynchronous workflows by centralized handling of post-add logic, reducing the need for separate success callbacks scattered across the codebase.

Design considerations include error handling strategy, atomicity and idempotency of the add, thread-safety, and cancellation. Depending on the language and framework, AddWithComplete may return void and rely entirely on the completion callback, or return a token, promise, or future that can be awaited or chained with other operations.

See also: asynchronous callbacks, completion handlers, promises and futures, add operations in data stores.