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

# BidirectionalCollection Implementations

## Topics

### Instance Properties

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

### Instance Methods

- [difference(from:by:)](swift/keyvaluepairs/difference(from:by:).md)
- [dropLast(_:)](swift/keyvaluepairs/droplast(_:).md)
- [formIndex(before:)](swift/keyvaluepairs/formindex(before:).md)
- [last(where:)](swift/keyvaluepairs/last(where:).md)
- [lastIndex(where:)](swift/keyvaluepairs/lastindex(where:).md)
- [reversed()](swift/keyvaluepairs/reversed().md)
- [suffix(_:)](swift/keyvaluepairs/suffix(_:).md)