---
title: evaluate
framework: coregraphics
role: symbol
role_heading: Instance Property
path: coregraphics/cgfunctioncallbacks/evaluate
---

# evaluate

The callback that evaluates the function.

## Declaration

```swift
var evaluate: CGFunctionEvaluateCallback?
```

## See Also

### Instance Properties

- [releaseInfo](coregraphics/cgfunctioncallbacks/releaseinfo.md)
- [version](coregraphics/cgfunctioncallbacks/version.md)