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https://github.com/mtj0928/strict-concurrency-tips
https://github.com/mtj0928/strict-concurrency-tips
Last synced: 6 days ago
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- Host: GitHub
- URL: https://github.com/mtj0928/strict-concurrency-tips
- Owner: mtj0928
- Created: 2024-07-24T14:56:37.000Z (5 months ago)
- Default Branch: main
- Last Pushed: 2024-08-05T01:20:22.000Z (5 months ago)
- Last Synced: 2024-10-30T19:07:32.114Z (about 2 months ago)
- Language: Swift
- Size: 24.4 KB
- Stars: 2
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# StrictConcurrency Tips
A place where you can experience the differences of concurrency checking with the same same source file and learn the tips.
## Environment
This project requires Xcode 16 (beta 4 or later) and iOS simulator.
## Usage
Clone this repository and open the xcworkspace.
```sh
git clone https://github.com/mtj0928/strict-concurrency-tips
cd strict-concurrency-tips
open strict-concurrency-tips.xcworkspace
```
## Contents
This repository has two contents.
- Playground
- Tips
### Playground
[Playground](https://github.com/mtj0928/strict-concurrency-tips/blob/main/strict-concurrency-tips/Playground.swift) is a place you you can experience the differences with the same swift file.
For more details, please check [Build Schemes](#build-schemes) and [How to Switch Code](#how-to-switch-code)
### Tips
This repository also shows tips for strict concurrency checking.
By switching the build scheme, you can learn the tips with actual compile checks.
#### Index
1. MainActor
- [UIView/UIViewController case](https://github.com/mtj0928/strict-concurrency-tips/blob/main/strict-concurrency-tips/Tips/1-MainActor/MainActor-1.swift)
- [Preconcurrency isolation](https://github.com/mtj0928/strict-concurrency-tips/blob/main/strict-concurrency-tips/Tips/1-MainActor/MainActor-2.swift)
- [Preconcurrency conformance / MainActor.assumeIsolated](https://github.com/mtj0928/strict-concurrency-tips/blob/main/strict-concurrency-tips/Tips/1-MainActor/MainActor-3.swift)
2. Sendable
- [Actor boundaries](https://github.com/mtj0928/strict-concurrency-tips/blob/main/strict-concurrency-tips/Tips/2-Sendable/Sendable-1.swift)
- [Mutable class + Sendable](https://github.com/mtj0928/strict-concurrency-tips/blob/main/strict-concurrency-tips/Tips/2-Sendable/Sendable-2.swift)
- [preconcurrency import](https://github.com/mtj0928/strict-concurrency-tips/blob/main/strict-concurrency-tips/Tips/2-Sendable/Sendable-3.swift)
3. GlobalVariable
- [GlobalVariable + Sendable](https://github.com/mtj0928/strict-concurrency-tips/blob/main/strict-concurrency-tips/Tips/3-GlobalVariable/GlobalVariable-1.swift)
- [GlobalVariable + Non-Sendable](https://github.com/mtj0928/strict-concurrency-tips/blob/main/strict-concurrency-tips/Tips/3-GlobalVariable/GlobalVariable-2.swift)
4. Others
- [deinit](https://github.com/mtj0928/strict-concurrency-tips/blob/main/strict-concurrency-tips/Tips/4-Others/deinit-1.swift)
If you want more contents, feel free to make a new issue with an error or warning example.
## Build Schemes
The project has three build schemes.
- Swift 5
- Swift 5 + StrictConcurrency
- Swift 6
By switching the build scheme, you can experience the differences of the build settings.
## How to Switch Code
You can use compiler macros like these
```swift
#if swift(<6.0)
// Swift 5 and Swift5 + StrictConcurrency are here.
#else
// Swift 6 is here.
#endif
```
```swift
#if hasFeature(StrictConcurrency)
// Swift5 + StrictConcurrency and Swift 6 are here.
#else
// Swift 5 is here.
#endif
```
This tables shows the values of the compiler macros for each target.
|| `swift(<6.0)` | `hasFeature(StrictConcurrency)` |
| ---- | --- | --- |
| Swift 5 | false | fase |
| Swift 5 + StrictConcurrency | false | true |
| Swift 6 | true | true |
## Reference
[The Swift Concurrency Migration Guide](https://www.swift.org/migration/documentation/migrationguide) is the official migration guide.
The contents are updated daily, and they are the most reliable informations.
This repository also refer the guideline.