---
title: "subscript(_:)"
framework: appintentstesting
role: symbol
role_heading: Instance Subscript
path: "appintentstesting/dynamicpropertypath/subscript(_:)-kiay"
---

# subscript(_:)

Accesses a collection element by index, for comparison with a known value.

## Declaration

```swift
subscript<T>(index: Int) -> T where T : IntentValueConvertible { get throws }
```

## Overview

Overview The code below shows the syntactic sugar and the equivalent, desugared, subscript syntax. let result = try await intent.run() // Expected an array as result value

try result.value[0] == "My Name" If the property’s value isn’t an instance of the type T, this subscript throws an error. For more information about dynamic-member syntax, see dynamicMemberLookup in The Swift Programming Language.