---
title: "buildBlock(_:_:)"
framework: swiftui
role: symbol
role_heading: Type Method
path: "swiftui/attributedtextformatting/definitionbuilder/buildblock(_:_:)"
---

# buildBlock(_:_:)

## Declaration

```swift
static func buildBlock<F, each D>(_ first: F, _ definition: repeat each D) -> AttributedTextFormatting.TupleDefinition<F.Scope, F, repeat each D> where F : AttributedTextFormattingDefinition, repeat each D : AttributedTextFormattingDefinition
```