<!--
{
  "availability" : [
    "iOS: 15.0.0 -",
    "iPadOS: 15.0.0 -",
    "macCatalyst: 15.0.0 -",
    "macOS: 12.0.0 -",
    "tvOS: 15.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 8.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Foundation",
  "identifier" : "/documentation/Foundation/AttributedStringProtocol/mergingAttributes(_:mergePolicy:)",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Method",
  "symbol" : {
    "kind" : "Instance Method",
    "modules" : [
      "Foundation"
    ],
    "preciseIdentifier" : "s:10Foundation24AttributedStringProtocolPAAE17mergingAttributes_11mergePolicyAA0bC0VAA18AttributeContainerV_AG0i5MergeH0OtF"
  },
  "title" : "mergingAttributes(_:mergePolicy:)"
}
-->

# mergingAttributes(_:mergePolicy:)

Returns an attributed string by merging the attributed string’s attributes with those in a specified attribute container.

```
func mergingAttributes(_ attributes: AttributeContainer, mergePolicy: AttributedString.AttributeMergePolicy = .keepNew) -> AttributedString
```

## Parameters

`attributes`

The attribute container with the attributes to merge.

`mergePolicy`

A policy to use when resolving conflicts between this string’s attributes and those in `attributes`.

## Return Value

An attributed string from merging the attributed string’s attributes with those in a specified attribute container. In cases where the same attribute exists in both the source string and `attributes`, the `mergePolicy` determines which value the returned string uses.

---

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)