---
title: Iterable Implementations
framework: Swift
role: collectionGroup
role_heading: API Collection
path: swift/outputspan/iterable-implementations
---

# Iterable Implementations

## Topics

### Instance Properties

- [underestimatedCount](swift/outputspan/underestimatedcount.md)
- [underestimatedCount](swift/outputspan/underestimatedcount-2kbxv.md)

### Instance Methods

- [makeBorrowingIterator()](swift/outputspan/makeborrowingiterator().md)

### Type Aliases

- [OutputSpan.BorrowingIterator](swift/outputspan/borrowingiterator.md)
- [OutputSpan.Failure](swift/outputspan/failure.md)