---
title: Collection Implementations
framework: swift
role: collectionGroup
role_heading: API Collection
path: swift/substring/utf16view/collection-implementations
---

# Collection Implementations

## Topics

### Instance Properties

- [count](swift/substring/utf16view/count.md)
- [endIndex](swift/substring/utf16view/endindex.md)
- [first](swift/substring/utf16view/first.md)
- [indices](swift/substring/utf16view/indices-swift.property.md)
- [isEmpty](swift/substring/utf16view/isempty.md)
- [startIndex](swift/substring/utf16view/startindex.md)
- [underestimatedCount](swift/substring/utf16view/underestimatedcount.md)

### Instance Methods

- [distance(from:to:)](swift/substring/utf16view/distance(from:to:).md)
- [drop(while:)](swift/substring/utf16view/drop(while:).md)
- [dropFirst(_:)](swift/substring/utf16view/dropfirst(_:).md)
- [firstIndex(of:)](swift/substring/utf16view/firstindex(of:).md)
- [firstIndex(where:)](swift/substring/utf16view/firstindex(where:).md)
- [formIndex(_:offsetBy:)](swift/substring/utf16view/formindex(_:offsetby:).md)
- [formIndex(_:offsetBy:limitedBy:)](swift/substring/utf16view/formindex(_:offsetby:limitedby:).md)
- [formIndex(after:)](swift/substring/utf16view/formindex(after:).md)
- [index(_:offsetBy:)](swift/substring/utf16view/index(_:offsetby:).md)
- [index(_:offsetBy:limitedBy:)](swift/substring/utf16view/index(_:offsetby:limitedby:).md)
- [index(after:)](swift/substring/utf16view/index(after:).md)
- [index(of:)](swift/substring/utf16view/index(of:).md)
- [indices(of:)](swift/substring/utf16view/indices(of:).md)
- [indices(where:)](swift/substring/utf16view/indices(where:).md)
- [makeIterator()](swift/substring/utf16view/makeiterator().md)
- [map(_:)](swift/substring/utf16view/map(_:)-2jwvg.md)
- [popFirst()](swift/substring/utf16view/popfirst().md)
- [prefix(_:)](swift/substring/utf16view/prefix(_:).md)
- [prefix(through:)](swift/substring/utf16view/prefix(through:).md)
- [prefix(upTo:)](swift/substring/utf16view/prefix(upto:).md)
- [prefix(while:)](swift/substring/utf16view/prefix(while:).md)
- [randomElement()](swift/substring/utf16view/randomelement().md)
- [randomElement(using:)](swift/substring/utf16view/randomelement(using:).md)
- [removeFirst()](swift/substring/utf16view/removefirst().md)
- [removeFirst(_:)](swift/substring/utf16view/removefirst(_:).md)
- [removingSubranges(_:)](swift/substring/utf16view/removingsubranges(_:).md)
- [split(maxSplits:omittingEmptySubsequences:whereSeparator:)](swift/substring/utf16view/split(maxsplits:omittingemptysubsequences:whereseparator:).md)
- [split(separator:maxSplits:omittingEmptySubsequences:)](swift/substring/utf16view/split(separator:maxsplits:omittingemptysubsequences:).md)
- [suffix(from:)](swift/substring/utf16view/suffix(from:).md)

### Subscripts

- [subscript(_:)](swift/substring/utf16view/subscript(_:)-20thk.md)
- [subscript(_:)](swift/substring/utf16view/subscript(_:)-2ljg7.md)
- [subscript(_:)](swift/substring/utf16view/subscript(_:)-3ijoy.md)
- [subscript(_:)](swift/substring/utf16view/subscript(_:)-5j3ao.md)
- [subscript(_:)](swift/substring/utf16view/subscript(_:)-ketw.md)

### Type Aliases

- [Substring.UTF16View.Index](swift/substring/utf16view/index.md)
- [Substring.UTF16View.Indices](swift/substring/utf16view/indices-swift.typealias.md)
- [Substring.UTF16View.Iterator](swift/substring/utf16view/iterator.md)
- [Substring.UTF16View.SubSequence](swift/substring/utf16view/subsequence.md)