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

# BidirectionalCollection Implementations

## Topics

### Instance Properties

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

### Instance Methods

- [difference(from:)](swift/discontiguousslice/difference(from:).md)
- [difference(from:by:)](swift/discontiguousslice/difference(from:by:).md)
- [formIndex(before:)](swift/discontiguousslice/formindex(before:).md)
- [index(before:)](swift/discontiguousslice/index(before:).md)
- [joined(separator:)](swift/discontiguousslice/joined(separator:)-4yy0x.md)
- [last(where:)](swift/discontiguousslice/last(where:).md)
- [lastIndex(of:)](swift/discontiguousslice/lastindex(of:).md)
- [lastIndex(where:)](swift/discontiguousslice/lastindex(where:).md)
- [popLast()](swift/discontiguousslice/poplast().md)
- [removeLast()](swift/discontiguousslice/removelast().md)
- [removeLast(_:)](swift/discontiguousslice/removelast(_:).md)