---
title: constant
framework: Compute Graph
role: symbol
role_heading: Type Property
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: computegraph/computenodegraph/port/options/constant
---

# constant

Port is constant and doesn’t need to be changeable.

## Declaration

```swift
static let constant: ComputeNodeGraph.Port.Options
```

## Discussion

Discussion Parameters with constant that are available at compile time can aid in optimization.