---
title: "init(custom:reusable:)"
framework: hvf
role: symbol
role_heading: Initializer
platforms: [iOS 18.4+, iPadOS 18.4+, Mac Catalyst 18.4+, macOS 15.4+, tvOS 18.4+, visionOS 2.4+, watchOS 11.4+]
path: "hvf/partrenderer/init(custom:reusable:)"
---

# init(custom:reusable:)

Use a custom, client-defined loader Setting reusable to true preserves the input parameter values when rendering; otherwise they are destroyed by rendering

## Declaration

```swift
init(custom: @escaping CustomPartLoader, reusable: Bool = false)
```