try! Swi) Pre Talks 2019 @satoshin21 #tryswi(_pre

INTRODUCE • @satoshin21 • eureka, Inc. • Pairs JP iOS Applica

Have you ever wri,en scripts in Swi3? #tryswi(_pre

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

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

Let's try! swift-sh ! #tryswi(_pre

What is swi)-sh ? • Define Dependencies and write swi0 scripts too easily • made by @mxcl (Max Howell) • Author of Homebrew, PromiseKit. #tryswi(_pre

Install brew install mxcl/made/swift-sh or mint install mxcl/swift-sh #tryswi(_pre

How to run script • Demo #tryswi(_pre

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

swi$ sh run with stdin > echo "import PromiseKit // @mxcl\nprint(Promise.value(\"Hello, World!\"))" | swift sh #tryswi(_pre

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

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

⚠ Warnings #tryswi(_pre

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

Warning 2: cache key • cache directory is created with swi/ file name. > swift sh sample.swift ~/Library/Developer/swift-sh.cache ├── └── sample ├── Package.resolved ├── Package.swift └── main.swift • If same file name is used, cache is shared each script. #tryswi(_pre

·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

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