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# index(before:)

Returns the position immediately before the given index.

```
borrowing func index(before i: InlineArray<count, Element>.Index) -> InlineArray<count, Element>.Index
```

## Parameters

`i`

A valid index of the array. `i` must be greater than
`startIndex`.

## Return Value

The index value immediately before `i`.

## Discussion> Complexity: O(1)

---

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