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

# Iterable Implementations

## Topics

### Instance Properties

- [underestimatedCount](swift/mutablespan/underestimatedcount.md)
- [underestimatedCount](swift/mutablespan/underestimatedcount-5p19x.md)

### Instance Methods

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

### Type Aliases

- [MutableSpan.BorrowingIterator](swift/mutablespan/borrowingiterator.md)
- [MutableSpan.Failure](swift/mutablespan/failure.md)