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

# BidirectionalCollection Implementations

## Topics

### Instance Properties

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

### Instance Methods

- [difference(from:)](swift/slice/difference(from:).md)
- [difference(from:by:)](swift/slice/difference(from:by:).md)
- [formIndex(before:)](swift/slice/formindex(before:).md)
- [formIndex(before:)](swift/slice/formindex(before:)-d9pr.md)
- [index(before:)](swift/slice/index(before:).md)
- [joined(separator:)](swift/slice/joined(separator:)-6sxlg.md)
- [last(where:)](swift/slice/last(where:).md)
- [lastIndex(of:)](swift/slice/lastindex(of:).md)
- [lastIndex(where:)](swift/slice/lastindex(where:).md)
- [popLast()](swift/slice/poplast()-7zlp7.md)
- [removeLast()](swift/slice/removelast()-29ty4.md)
- [removeLast(_:)](swift/slice/removelast(_:)-4ijd6.md)