---
title: "subscript(dynamicMember:)"
framework: foundation
role: symbol
role_heading: Instance Subscript
path: "foundation/date/formatstyle/attributed-swift.struct/subscript(dynamicmember:)-5y393"
---

# subscript(dynamicMember:)

## Declaration

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