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# format(_:)

Creates a locale-aware attributed string representation from a duration value.

```
func format(_ duration: Duration) -> AttributedString
```

## Parameters

`duration`

The duration value to format.

## Return Value

A string representation of the duration, according to the style’s pattern and locale.

## Discussion

Use this method when you want to create a format style and repeatedly use it to format different durations. For one-off cases with default formatting, call the [`formatted()`](/documentation/Swift/Duration/formatted()) method of [`Duration`](/documentation/Swift/Duration) instead.

---

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