---
title: functions
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtllinkedfunctions/functions
---

# functions

An array of function objects to link to the new function.

## Declaration

```swift
var functions: [any MTLFunction]? { get set }
```

## See Also

### Specifying related functions

- [binaryFunctions](metal/mtllinkedfunctions/binaryfunctions.md)
- [groups](metal/mtllinkedfunctions/groups.md)
- [privateFunctions](metal/mtllinkedfunctions/privatefunctions.md)