---
title: LazyFilterSequence.SubSequence
framework: swift
role: symbol
role_heading: Type Alias
path: swift/lazyfiltersequence/subsequence
---

# LazyFilterSequence.SubSequence

A collection representing a contiguous subrange of this collection’s elements. The subsequence shares indices with the original collection.

## Declaration

```swift
typealias SubSequence = LazyFilterCollection<Base.SubSequence>
```

## Discussion

Discussion The default subsequence type for collections that don’t define their own is Slice.