---
title: source
framework: Compute Graph
role: symbol
role_heading: Instance Property
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: computegraph/computenodegraph/edge/source
---

# source

Source of the data, event, or execution flow

## Declaration

```swift
var source: ComputeNodeGraph.Port.Address
```

## Discussion

Discussion Refers to an output port of a node.