---
title: "keyPathsAffectingValue(for:)"
framework: foundation
role: symbol
role_heading: Type Method
path: "foundation/nskeyvalueobservingcustomization/keypathsaffectingvalue(for:)"
---

# keyPathsAffectingValue(for:)

## Declaration

```swift
static func keyPathsAffectingValue(for key: AnyKeyPath) -> Set<AnyKeyPath>
```