---
title: "filter(matching:contains:)"
framework: musickit
role: symbol
role_heading: Instance Method
path: "musickit/musiclibraryrequest/filter(matching:contains:)-4q231"
---

# filter(matching:contains:)

Filters items by a given optional property that contains a specific string.

## Declaration

```swift
mutating func filter(matching keyPath: KeyPath<MusicItemType.LibraryFilter, String?>, contains text: String)
```