Kuidas peatada goroutine'i täitmine määratud aja möödumisel, kui tulemust ei ole saadud?

In Go, to stop the execution of a goroutine after a specified time, select with a timer or a context with a timeout is usually used.

Example with time.After:

select {
case result := <-ch:
    // process result
case <-time.After(2 * time.Second):
    // timeout — result not received within 2 seconds
}

Example with context:

ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
defer cancel()

select {
case result := <-ch:
    // process result
case <-ctx.Done():
    // timeout or cancellation
}

This way, if the result does not arrive in time, execution can be interrupted and the timeout handled.