---
title: Collection Implementations
framework: swift
role: collectionGroup
role_heading: API Collection
path: swift/dictionary/values-swift.struct/collection-implementations
---

# Collection Implementations

## Topics

### Structures

- [Dictionary.Values.Iterator](swift/dictionary/values-swift.struct/iterator.md)

### Instance Properties

- [first](swift/dictionary/values-swift.struct/first.md)
- [indices](swift/dictionary/values-swift.struct/indices-swift.property.md)
- [underestimatedCount](swift/dictionary/values-swift.struct/underestimatedcount.md)

### Instance Methods

- [distance(from:to:)](swift/dictionary/values-swift.struct/distance(from:to:).md)
- [drop(while:)](swift/dictionary/values-swift.struct/drop(while:).md)
- [dropFirst(_:)](swift/dictionary/values-swift.struct/dropfirst(_:).md)
- [dropLast(_:)](swift/dictionary/values-swift.struct/droplast(_:).md)
- [firstIndex(of:)](swift/dictionary/values-swift.struct/firstindex(of:).md)
- [firstIndex(where:)](swift/dictionary/values-swift.struct/firstindex(where:).md)
- [formIndex(_:offsetBy:)](swift/dictionary/values-swift.struct/formindex(_:offsetby:).md)
- [formIndex(_:offsetBy:limitedBy:)](swift/dictionary/values-swift.struct/formindex(_:offsetby:limitedby:).md)
- [index(_:offsetBy:)](swift/dictionary/values-swift.struct/index(_:offsetby:).md)
- [index(_:offsetBy:limitedBy:)](swift/dictionary/values-swift.struct/index(_:offsetby:limitedby:).md)
- [index(of:)](swift/dictionary/values-swift.struct/index(of:).md)
- [indices(of:)](swift/dictionary/values-swift.struct/indices(of:).md)
- [indices(where:)](swift/dictionary/values-swift.struct/indices(where:).md)
- [makeIterator()](swift/dictionary/values-swift.struct/makeiterator().md)
- [map(_:)](swift/dictionary/values-swift.struct/map(_:)-8qoco.md)
- [prefix(_:)](swift/dictionary/values-swift.struct/prefix(_:).md)
- [prefix(through:)](swift/dictionary/values-swift.struct/prefix(through:).md)
- [prefix(upTo:)](swift/dictionary/values-swift.struct/prefix(upto:).md)
- [prefix(while:)](swift/dictionary/values-swift.struct/prefix(while:).md)
- [randomElement()](swift/dictionary/values-swift.struct/randomelement().md)
- [randomElement(using:)](swift/dictionary/values-swift.struct/randomelement(using:).md)
- [removingSubranges(_:)](swift/dictionary/values-swift.struct/removingsubranges(_:).md)
- [split(maxSplits:omittingEmptySubsequences:whereSeparator:)](swift/dictionary/values-swift.struct/split(maxsplits:omittingemptysubsequences:whereseparator:).md)
- [split(separator:maxSplits:omittingEmptySubsequences:)](swift/dictionary/values-swift.struct/split(separator:maxsplits:omittingemptysubsequences:)-4wty7.md)
- [suffix(_:)](swift/dictionary/values-swift.struct/suffix(_:).md)
- [suffix(from:)](swift/dictionary/values-swift.struct/suffix(from:).md)