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# FlattenSequence.Index

A position in a FlattenCollection

```
@frozen struct Index
```

## Topics

### Default Implementations

[Comparable Implementations](/documentation/Swift/FlattenSequence/Index/Comparable-Implementations)

[Equatable Implementations](/documentation/Swift/FlattenSequence/Index/Equatable-Implementations)

[Hashable Implementations](/documentation/Swift/FlattenSequence/Index/Hashable-Implementations)

## Relationships

### Conforms To

[`Comparable`](/documentation/Swift/Comparable)

[`Sendable`](/documentation/Swift/Sendable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Hashable`](/documentation/Swift/Hashable)

[`Equatable`](/documentation/Swift/Equatable)

---

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