try! swift-sh

#tryswift_pre

Swiftでスクリプトを書く場合、サードパーティのライブラリを使う場合にちょっとした面倒臭さを感じます。Package.swiftを書き、依存性を定義し、swift buildし・・。

Homebrew開発者でもあるMax Howell氏がswift-shというプロジェクトを開始しました。
これは上記のような依存性の定義をより簡単に行い、スクリプトをより簡単に、そしてすばやく書くことを可能にしてくれます。
みなさんと一緒に、swift-shの使い方を学び、快適なスクリプトライフを送りましょう！

try! Swift Pre Talks
https://tryswifttokyo-aftertalks.connpass.com/event/120987/

Transcript

1. try! Swi) Pre Talks 2019 @satoshin21 #tryswi(_pre
2. INTRODUCE • @satoshin21 • eureka, Inc. • Pairs JP iOS Applica<on Engineer #tryswi(_pre
3. Have you ever wri,en scripts in Swi3? #tryswi(_pre
4. How to make CLI tool with dependencies basically 1. swift init —type executable 2. Edit Package.swift 1. Add dependencies 2. Add dependencies to target 3. swift build —configuration debug (or swift run) 4. Execute ./.build/debug/{package name} #tryswi(_pre
5. It's boresome a bit • It's easy to write swi. script without dependencies. • no needs to create Package.swift file. • But, some:mes, I just want to write simple scripts quickly. • try awesome packages... • write swi. codes as playgrounds... #tryswi(_pre
6. Let's try! swift-sh ! #tryswi(_pre
7. What is swi)-sh ? • Define Dependencies and write swi0 scripts too easily • made by @mxcl (Max Howell) • Author of Homebrew, PromiseKit. #tryswi(_pre
8. Install brew install mxcl/made/swift-sh or mint install mxcl/swift-sh #tryswi(_pre
9. How to run script • Demo #tryswi(_pre
10. How swi'-sh manage dependencies? 1. make build directory each script file • mkdir -p ~/Library/Developer/swi6.-sh.cache/{filename} 2. write Package.swi; 3. make symlink script file as main.swi6 4. swift build -Xswiftc -spress-warnings 5. exec ./build/debug/{filename} #tryswi(_pre
11. swi$ sh run with stdin > echo "import PromiseKit // @mxcl\nprint(Promise.value(\"Hello, World!\"))" | swift sh #tryswi(_pre
12. swi$ sh edit > swift sh edit sample.swift • Generate .xcodeproj/ file in swi$-sh cache dir • Not working dir. • cached swi: file is symlinked to working file. #tryswi(_pre
13. swi$ sh eject > swift sh eject sample.swift . └── Sample ├── Package.swift └── Sources └── main.swift • Generate Package.swift file. • ⚠ swi/ file will be moved to sub directory #tryswi(_pre
14. ⚠ Warnings #tryswi(_pre
15. Warning 1: too late... // sample.swift import PromiseKit // @mxcl ~> 6.5 print(Promise.value("Hi!")) target elapsed +me compiled swi, file 0.01s ! swi,-sh(no cached) 42.95s " swi,-sh(cached) 0.67s # • swi%-sh is build every +me, so affect execu2on 2me. #tryswi(_pre
16. Warning 2: cache key • cache directory is created with swi/ file name. > swift sh sample.swift ~/Library/Developer/swift-sh.cache ├── <stdin> └── sample ├── Package.resolved ├── Package.swift └── main.swift • If same file name is used, cache is shared each script. #tryswi(_pre
17. ·ͱΊ Write with for target user Swi$PM ɾWant to manage targets/ dependencies strictly ɾneeds to write test code. swi$-sh ɾTry awesome Libraries ɾWrite scripts quickly #tryswi(_pre
18. END #tryswi(_pre