---
title: Collection Implementations
framework: swift
role: collectionGroup
role_heading: API Collection
path: swift/emptycollection/collection-implementations
---

# Collection Implementations

## Topics

### Instance Properties

- [count](swift/emptycollection/count.md)
- [first](swift/emptycollection/first.md)
- [isEmpty](swift/emptycollection/isempty.md)
- [underestimatedCount](swift/emptycollection/underestimatedcount.md)

### Instance Methods

- [drop(while:)](swift/emptycollection/drop(while:).md)
- [dropFirst(_:)](swift/emptycollection/dropfirst(_:).md)
- [firstIndex(of:)](swift/emptycollection/firstindex(of:).md)
- [firstIndex(where:)](swift/emptycollection/firstindex(where:).md)
- [formIndex(_:offsetBy:)](swift/emptycollection/formindex(_:offsetby:).md)
- [formIndex(_:offsetBy:limitedBy:)](swift/emptycollection/formindex(_:offsetby:limitedby:).md)
- [formIndex(after:)](swift/emptycollection/formindex(after:).md)
- [index(of:)](swift/emptycollection/index(of:).md)
- [indices(of:)](swift/emptycollection/indices(of:).md)
- [indices(where:)](swift/emptycollection/indices(where:).md)
- [map(_:)](swift/emptycollection/map(_:)-6q1dq.md)
- [popFirst()](swift/emptycollection/popfirst().md)
- [prefix(_:)](swift/emptycollection/prefix(_:).md)
- [prefix(through:)](swift/emptycollection/prefix(through:).md)
- [prefix(upTo:)](swift/emptycollection/prefix(upto:).md)
- [prefix(while:)](swift/emptycollection/prefix(while:).md)
- [randomElement()](swift/emptycollection/randomelement().md)
- [randomElement(using:)](swift/emptycollection/randomelement(using:).md)
- [removeFirst()](swift/emptycollection/removefirst().md)
- [removeFirst(_:)](swift/emptycollection/removefirst(_:).md)
- [removingSubranges(_:)](swift/emptycollection/removingsubranges(_:).md)
- [split(maxSplits:omittingEmptySubsequences:whereSeparator:)](swift/emptycollection/split(maxsplits:omittingemptysubsequences:whereseparator:).md)
- [split(separator:maxSplits:omittingEmptySubsequences:)](swift/emptycollection/split(separator:maxsplits:omittingemptysubsequences:)-4mogv.md)
- [suffix(from:)](swift/emptycollection/suffix(from:).md)

### Subscripts

- [subscript(_:)](swift/emptycollection/subscript(_:)-2eo9o.md)
- [subscript(_:)](swift/emptycollection/subscript(_:)-4a2g8.md)
- [subscript(_:)](swift/emptycollection/subscript(_:)-th66.md)

### Type Aliases

- [EmptyCollection.Indices](swift/emptycollection/indices.md)
- [EmptyCollection.SubSequence](swift/emptycollection/subsequence.md)