---
title: AttributedTextFormatting.TupleDefinition
framework: swiftui
role: symbol
role_heading: Structure
path: swiftui/attributedtextformatting/tupledefinition
---

# AttributedTextFormatting.TupleDefinition

A text formatting definition that enforces the constraints of a series of text formatting definitions.

## Declaration

```swift
struct TupleDefinition<Scope, each Definition> where Scope : AttributeScope, repeat each Definition : AttributedTextFormattingDefinition
```

## Overview

Overview note: All sub-definitions are required to have the same Scope.

## Topics

### Initializers

- [init(definition:)](swiftui/attributedtextformatting/tupledefinition/init(definition:).md)

## Relationships

### Conforms To

- [AttributedTextFormattingDefinition](swiftui/attributedtextformattingdefinition.md)