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

# Collection Implementations

## Topics

### Instance Properties

- [count](swift/lazymapsequence/count.md)
- [count](swift/lazymapsequence/count-5qqod.md)
- [endIndex](swift/lazymapsequence/endindex.md)
- [indices](swift/lazymapsequence/indices-swift.property.md)
- [isEmpty](swift/lazymapsequence/isempty.md)
- [isEmpty](swift/lazymapsequence/isempty-75pes.md)
- [startIndex](swift/lazymapsequence/startindex.md)

### Instance Methods

- [distance(from:to:)](swift/lazymapsequence/distance(from:to:).md)
- [distance(from:to:)](swift/lazymapsequence/distance(from:to:)-3i820.md)
- [firstIndex(of:)](swift/lazymapsequence/firstindex(of:).md)
- [firstIndex(where:)](swift/lazymapsequence/firstindex(where:).md)
- [formIndex(_:offsetBy:)](swift/lazymapsequence/formindex(_:offsetby:).md)
- [formIndex(_:offsetBy:limitedBy:)](swift/lazymapsequence/formindex(_:offsetby:limitedby:).md)
- [formIndex(after:)](swift/lazymapsequence/formindex(after:).md)
- [formIndex(after:)](swift/lazymapsequence/formindex(after:)-6932e.md)
- [index(_:offsetBy:)](swift/lazymapsequence/index(_:offsetby:).md)
- [index(_:offsetBy:)](swift/lazymapsequence/index(_:offsetby:)-78pdz.md)
- [index(_:offsetBy:limitedBy:)](swift/lazymapsequence/index(_:offsetby:limitedby:).md)
- [index(_:offsetBy:limitedBy:)](swift/lazymapsequence/index(_:offsetby:limitedby:)-5uiel.md)
- [index(after:)](swift/lazymapsequence/index(after:).md)
- [index(of:)](swift/lazymapsequence/index(of:).md)
- [indices(of:)](swift/lazymapsequence/indices(of:).md)
- [indices(where:)](swift/lazymapsequence/indices(where:).md)
- [map(_:)](swift/lazymapsequence/map(_:)-8qb3x.md)
- [prefix(through:)](swift/lazymapsequence/prefix(through:).md)
- [prefix(upTo:)](swift/lazymapsequence/prefix(upto:).md)
- [randomElement()](swift/lazymapsequence/randomelement().md)
- [randomElement(using:)](swift/lazymapsequence/randomelement(using:).md)
- [removingSubranges(_:)](swift/lazymapsequence/removingsubranges(_:).md)
- [split(separator:maxSplits:omittingEmptySubsequences:)](swift/lazymapsequence/split(separator:maxsplits:omittingemptysubsequences:)-5eafc.md)
- [suffix(from:)](swift/lazymapsequence/suffix(from:).md)

### Subscripts

- [subscript(_:)](swift/lazymapsequence/subscript(_:)-36b2w.md)
- [subscript(_:)](swift/lazymapsequence/subscript(_:)-3hxz5.md)
- [subscript(_:)](swift/lazymapsequence/subscript(_:)-4qmx0.md)
- [subscript(_:)](swift/lazymapsequence/subscript(_:)-4tv8v.md)
- [subscript(_:)](swift/lazymapsequence/subscript(_:)-88114.md)

### Type Aliases

- [LazyMapSequence.Index](swift/lazymapsequence/index.md)
- [LazyMapSequence.Indices](swift/lazymapsequence/indices-swift.typealias.md)
- [LazyMapSequence.SubSequence](swift/lazymapsequence/subsequence.md)