> ## Documentation Index
> Fetch the complete documentation index at: https://docs-old.tilebox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# workflows.WithTaskSpanResult

```go theme={"system"}
workflows.WithTaskSpanResult[Result any](
    ctx context.Context,
    name string,
    f func(ctx context.Context) (Result, error),
) (Result, error)
```

Wrap a function with a [tracing span](https://docs-old.tilebox.com/workflows/run-and-inspect/tracing.md) using the current runner's tracer and return the function result.

`WithTaskSpanResult` is an alias for [`WithSpanResult`](https://docs-old.tilebox.com/api-reference/go/workflows/WithSpanResult). Use it inside a task `Execute` method. If the context is not a task execution context, the function runs without creating a span.

## Parameters

**ctx** `context.Context` *required*

The task execution context.

**name** `string` *required*

The name of the span.

**f** `func(context.Context) (Result, error)` *required*

The function to wrap.

## Returns

The result and error returned by `f`.

```go Go theme={"system"}
type Task struct{}

func (t *Task) Execute(ctx context.Context) error {
  result, err := workflows.WithTaskSpanResult(ctx, "Expensive Compute", func(ctx context.Context) (int, error) {
		return 6 * 7, nil
	})
  if err != nil {
    return fmt.Errorf("failed to compute: %w", err)
  }

	return nil
}
```


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