try! Swift recap! 1st day AM #tryswiftconf

Notice

This is a translated version of the article below written by Jun Kato. I translated the article. Because I'm not a bilingual, it may contain mistranslations. It will be good if you can feel atmosphere of try!Swift :)

try! Swift 最速レポート 1日目午前

Our repors

Translated versions (still on the way to translate!)

• try!Swift recap! 1st day PM #tryswiftconf
• try!Swift recap! 2nd day AM #tryswiftconf
• try!Swift recap! 2nd day PM #tryswiftconf
• try!Swift recap! 3rd day AM #tryswiftconf
• try!Swift recap! 3rd day PM #tryswiftconf

Original Japanese versions

• try! Swift 最速レポート 1日目午後
• try! Swift 最速レポート 2日目午前
• try! Swift 最速レポート 2日目午後
• try! Swift 最速レポート 3日目午前
• try! Swift 最速レポート 3日目午後

try! Swift A fastest report for 1st day

Hi! It's Jun Kato. I'm at try! Swift - a huge conference of/for the Swift developers! This event's purpose is to gather at one place and share knowledges and tech skills. It will be 3-days event. Developers.IO (this blog) will deliver articles of this event! Let's get started!!

Contents

• Breakfast
• Opening Announcements
• Dive into Swift Ecosystem
• Practical Cross-Platform Swift
• Learning to Read Again
• ?（Apple TV）
• Keep Calm and Type Erase On
• Lunch

Breakfast

I could eat a fashionable cookie!

Opening Announcements

• There was an explanation of a meeting place and simultaneous translation by a staff of CYBER AGENT. The event was held at the hall at CYBER AGENT.
• Kishikawa (Realm) explained about this conference and a notices during the sessions.
  • It was 3-days-event and there were 33 sessions, and 26 26 sessions by speaker from overseas.
  • Simultaneous translation is served: Japanese and English.

  

Dive into Swift Ecosystem

Presented by Syo Ikeda

Material

Report

• Swift became an open source language 3 months ago. There are about 1500 pull requests so far.
• Services around Swift.
  • IBM Swift Sandbox
  • paiza.IO
  • Heroku with Buildpacks
  • Swift@IBM
  • OpenWhisk
  • SwiftDoc.org
  • CocoaDocs
• CI
• Code Coverage
  • Codecov
  • HoundCI
• Development toolw around Swift
  • Carthage
  • CocoaPods
  • Swift Package Manager
  • SourceKitten
  • SwiftLInt
  • jazzy
  • SourceKittenDaemon
  • Buildasaur
  • XcodeServerSDK
  • SwiftGen
  • R.swift
  • Quick
  • Spectre
• Contributing to the services and tools
  • Try to use tool and services if you're interested in.
  • Give Stars your favorites at GitHub - Developers will be delighted!
  • It's better to report bugs with logs and how to reproduce the situation.
  • You will be able to answer the questions from others while you're accostomed to use services and tools.
  • Let's try to send pull requests!
    • It's good to fix typo and mistranslation.

Q&A

• Are there any libraries you want to contribute?
  • I want to contribute to Apple's Swift and foundation.
• Is SourceKittenDaemon already packaged?
  • There is a sample to complete codes using SourceKittenDaemon at GitHub repository.
• Which of the package managers will survive?
  • I think Swift Package Manager will survive in the end.

Practical Cross-Platform Swift

Presented by JP Simard

Material

Report

• Development Environment of Swift
  • XCODE
  • XCODE + TOOLCHAIN
  • DOCKER + CLI + EDITOR
• Swift Package Manager
  • It's recommended in case of cross-platform development.
• There are cases of errors when you run Swift code on Linux even though the code looks like a "pure Swift."
• You need to check whether runtime libraries of Objective-C are used or not.
• About Test
  • SPM TESTING
• CI
  • TRAVIS CI（CI configurations on Linux）

Q&A

• Which part of Result library's casts are depending on runtime libraries of Objective-C?
  • I don't know (LOL). I'm working on debug.

Learning to Read Again

Presented by Laura Savino

Report

• Learn how to code means learining a new language.
• It will be easier to learn 3rd language if you learn 2nd one.
• What's readble code?
  • You need to think about readers - who they are.
• Important code must be easy to understand.
• Admiting you can't understand the code is almost the same thing as you can't work.
• About working memory
• About chunking
• The energy is needed to decipher
• How to code?
  • Do not use slangs.
  • Do not omit necessary information.
  • Use patterns to variable names.
• I want you to write the code which can be read without making them decipher.

?（Apple TV）

Presented by Boris Bügling

Report

• About tvOS
  • The future of TV is apps (and iOS)
• Difference between iOS and tvOS
  • WEBKIT
  • OAuth can't be used in tvOS.
  • The capacity of storage is limited on tvOS
• Porting existing apps
  • Cocoapods 0.39.0 supports tvOS
• Nib can't be used on tvOS.
• Protocols on updating focuses.
• How to debug when objects are not focused?
• HANDOFF is not supported.
• Siri Remote as a game controller.
• TVML
  • TVML's use case: catalogue apps.
• It will be nice if you know UIKit.

Keep Calm and Type Erase On

Presented by Gwendolyn Weston

Report

• What's "type?"
  • Type is a classification. Types define the set of values and effective operations for the values.
• Concrete types and Abstract types
• Make a wrapper class to avoid compile error that occurs when protocol-related-types are abstract.
  • Sample code is here!（Pokemon!! An attack name スピードスター in Japanese original version would be Swift in English!）
  • The information of types are erased as a side-effect (Pikachu and Raichu in a sample code)
• Type erasure is a kind of design pattern.
• Swift doesn't support covariance of codes

Lunch

Lunch boxes! I ate a lunch box containing a hamburger!

Tokihiko Tamiya will report this afternoon!