Swift’s Result Builders

TupleViews and more!

Steven Curtis
5 min readSep 14, 2023
Photo by Clem Onojeghuo on Unsplash

Difficulty: Beginner | Easy | Normal | Challenging

This article has been developed using Xcode 14.2, and Swift 5.7.2

Prerequisites:

You need to be able to code in Swift, perhaps using Playgrounds and be able to use SwiftUI

Terminology

@resultBuilder: An attribute that transforms a sequence of statements into a single combined value

TupleView: A View created from a swift tuple of View values

Tuple: A group of zero or more values represented as a single compound value

Type: A representation of the type of data that can be processed, for example Integer or String

Variadric parameters: A parameter for a function that accepts zero or more values of the specified type

Result builders: The prerequisites

We need to understand a number of things to be able to fully understand

Tuples…from the beginning

I’ve already written about Tuples in a previous article as they allow you to store multiple values in a single variable.

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