---
title: "subscript(dynamicMember:)"
framework: swift
role: symbol
role_heading: Instance Subscript
path: "swift/duration/timeformatstyle/attributed-swift.struct/subscript(dynamicmember:)-32lo0"
---

# subscript(dynamicMember:)

## Declaration

```swift
subscript<T>(dynamicMember key: WritableKeyPath<Duration.TimeFormatStyle, T>) -> T { get set }
```