<!--
{
  "availability" : [
    "iOS: 18.0.0 -",
    "iPadOS: 18.0.0 -",
    "macCatalyst: 18.0.0 -",
    "macOS: 15.0.0 -",
    "tvOS: 26.0.0 -",
    "visionOS: 2.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "RealityKit",
  "identifier" : "/documentation/RealityKit/BlendShapeWeightsSet/contains(_:)",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Method",
  "symbol" : {
    "kind" : "Instance Method",
    "modules" : [
      "RealityKit"
    ],
    "preciseIdentifier" : "s:17RealityFoundation20BlendShapeWeightsSetV8containsySbSSF"
  },
  "title" : "contains(_:)"
}
-->

# contains(_:)

Checks if the set contains a blend shape weights data instance with the given name.

```
func contains(_ blendShapeName: String) -> Bool
```

## Parameters

`blendShapeName`

The name of the blend shape to look up.

## Return Value

`true` blend shape weights data associated with the matching name is contained in the set.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)