---
title: "subscript(dynamicMember:)"
framework: swift
role: symbol
role_heading: Instance Subscript
path: "swift/duration/unitsformatstyle/attributed-swift.struct/subscript(dynamicmember:)-57dpz"
---

# subscript(dynamicMember:)

## Declaration

```swift
subscript<T>(dynamicMember key: KeyPath<Duration.UnitsFormatStyle, T>) -> T { get }
```