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fuckingapproachableswiftconcurrency

(★ 150)

A cheatsheet to learn approachable Swift concurrency

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# Installation Guide

1. Get the code

git clone https://github.com/tuist/fuckingapproachableswiftconcurrency

Downloads the entire project code from GitHub to your computer.

cd fuckingapproachableswiftconcurrency

Moves into the project folder you just downloaded.

2. Node.js

Easy Recommended

Prerequisites

Git Needed to download the project code from GitHub.
Node.js Node.js must be installed to use npm. The LTS version is recommended.

pnpm install

Downloads and installs the libraries listed in package.json.

pnpm dev

Starts the development/run server.

pnpm build

Type this command into your terminal and run it.

✅ After running the command, open the address shown in the terminal (usually something like http://localhost:3000) in your browser.

Pulled directly from this repo's README.

// repository documentation

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# Fucking Approachable Swift Concurrency

[![All Contributors](https://img.shields.io/badge/all_contributors-6-orange.svg?style=flat-square)](https://raw.githubusercontent.com/tuist/fuckingapproachableswiftconcurrency/main/)

A no-bullshit guide to understanding Swift concurrency. Learn async/await, actors, Sendable, and MainActor with simple mental models.

**[Visit the site](https://fuckingapproachableswiftconcurrency.com)**

## About

Swift concurrency can be confusing. This site distills the best resources into clear, approachable mental models that anyone can understand.

In the tradition of [fuckingblocksyntax.com](https://fuckingblocksyntax.com/) and [fuckingifcaseletsyntax.com](https://fuckingifcaseletsyntax.com/).

## Topics Covered

- **Async/Await** - Suspension vs blocking, and why it matters
- **Tasks** - Managing async work with Task and TaskGroup
- **Isolation** - The core mental model for Swift concurrency (MainActor, actors, nonisolated)
- **Sendable** - What can safely cross isolation boundaries
- **Isolation Inheritance** - How isolation flows through your code
- **Common Mistakes** - And how to avoid them

## Languages

Available in 14 languages: English, Spanish, Ukrainian, Portuguese (BR & PT), Arabic, Korean, Japanese, Chinese (Simplified & Traditional), Russian, Turkish, French and Polish.

## Development

This site is built with [Eleventy](https://www.11ty.dev/).

### Prerequisites

- [mise](https://mise.jdx.dev/) (for managing Node.js and pnpm)

### Setup

```bash
mise install
pnpm install
```

### Development Server

```bash
pnpm dev
```

Then open **http://localhost:8080/** in your browser.

### Build

```bash
pnpm build
```

## Credits

Much of this guide is distilled from [Matt Massicotte's](https://www.massicotte.org/) excellent work on Swift concurrency.

## License

MIT License - see [LICENSE.md](LICENSE.md)

## Contributors ✨

Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):

<table>
  <tbody>
    <tr>
      <td align="center" valign="top" width="14.28%"><a href="https://github.com/AkshayAShah"><img src="https://avatars.githubusercontent.com/u/148655?v=4?s=100" width="100px;" alt="Akshay"/><br /><sub><b>Akshay</b></sub></a><br /><a href="#content-AkshayAShah" title="Content">🖋</a></td>
      <td align="center" valign="top" width="14.28%"><a href="https://peterspath.net"><img src="https://avatars.githubusercontent.com/u/211143281?v=4?s=100" width="100px;" alt="Peter's Path"/><br /><sub><b>Peter's Path</b></sub></a><br /><a href="#content-peterspath" title="Content">🖋</a></td>
      <td align="center" valign="top" width="14.28%"><a href="http://www.stormacq.com"><img src="https://avatars.githubusercontent.com/u/401798?v=4?s=100" width="100px;" alt="Sébastien Stormacq"/><br /><sub><b>Sébastien Stormacq</b></sub></a><br /><a href="#content-sebsto" title="Content">🖋</a></td>
      <td align="center" valign="top" width="14.28%"><a href="https://github.com/exproot"><img src="https://avatars.githubusercontent.com/u/72192187?v=4?s=100" width="100px;" alt="Ertan"/><br /><sub><b>Ertan</b></sub></a><br /><a href="https://github.com/tuist/fuckingapproachableswiftconcurrency/commits?author=exproot" title="Documentation">📖</a></td>
      <td align="center" valign="top" width="14.28%"><a href="https://vikram.kriplaney.com"><img src="https://avatars.githubusercontent.com/u/55100?v=4?s=100" width="100px;" alt="Vikram Kriplaney"/><br /><sub><b>Vikram Kriplaney</b></sub></a><br /><a href="#content-markiv" title="Content">🖋</a></td>
      <td align="center" valign="top" width="14.28%"><a href="https://github.com/krzyszt0xF"><img src="https://avatars.githubusercontent.com/u/10384246?v=4?s=100" width="100px;" alt="Krzysztof"/><br /><sub><b>Krzysztof</b></sub></a><br /><a href="https://github.com/tuist/fuckingapproachableswiftconcurrency/commits?author=krzyszt0xF" title="Code">💻</a></td>
    </tr>
  </tbody>
</table>

This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!