---
title: BidirectionalCollection Implementations
framework: swift
role: collectionGroup
role_heading: API Collection
path: swift/collectionofone/bidirectionalcollection-implementations
---

# BidirectionalCollection Implementations

## Topics

### Instance Properties

- [last](swift/collectionofone/last.md)

### Instance Methods

- [difference(from:)](swift/collectionofone/difference(from:).md)
- [difference(from:by:)](swift/collectionofone/difference(from:by:).md)
- [dropLast(_:)](swift/collectionofone/droplast(_:).md)
- [formIndex(before:)](swift/collectionofone/formindex(before:).md)
- [joined(separator:)](swift/collectionofone/joined(separator:)-7kra3.md)
- [last(where:)](swift/collectionofone/last(where:).md)
- [lastIndex(of:)](swift/collectionofone/lastindex(of:).md)
- [lastIndex(where:)](swift/collectionofone/lastindex(where:).md)
- [reversed()](swift/collectionofone/reversed().md)
- [suffix(_:)](swift/collectionofone/suffix(_:).md)