2019/06/27 19:30~20:30 - Githubissues

ngtk commented 4 years ago

Why

For Enhancing our skills 💪
For enjoying iOS/Swift development 🥳

Where

Pearl Jam (Subject to change)

5F, MG Shirokanedai Building (Wantedly, Inc. Tokyo HQ)

Who

You are working for Wantedly? Sure, you can join anytime. If not, you need to contact us first. Or, you can "want to visit" the meetup, which you can find in www.wantedly.com/companies/wantedly/projects.

What

You write topics like below contents and we talk about these on the meetup. Every participant needs to write one topic at least.

News topics you found ✨
Questions or issues you have on your daily development 🤔
Today's Shortcuts ⛳️

Also, you can find new topics from the newsletters:

How

Don't hassle to prepare
Everyone can join and leave in the middle
Do not skip if we have few attendees

　　　　　　　　　・・・

参加者は開催までに話したいことを少なくとも1トピックをコメントしましょう。ネタ被りを避けるために、まずはタイトルだけでコメントすることを推奨します。より多くの学びを得るためにどんな内容でもアウトプットを歓迎します！😊

cc/ @wantedly/ios

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Previous issue

hiranodept commented 4 years ago

iOS 13では ModalView を閉じたときに ViewWillAppear が呼ばれなくなっている

らしいので、要注意。（自分ではまだ動作確認できていない汗） モーダルを開く際、.fullScreen で完全に画面を覆わない限りは呼ばれないっぽいですね https://twitter.com/koogawa/status/1164892755417415680?s=21

View Controller Presentation Changes in iOS 13

ref: https://medium.com/@hacknicity/view-controller-presentation-changes-in-ios-13-ac8c901ebc4e

ShotaKashihara commented 4 years ago

UITestでRxSwift のメモリリークを確認する手法

Guarantee Rx memory leaks absence https://medium.com/flawless-app-stories/guarantee-rx-memory-leaks-absence-3a90636ec49e

概要

以下のRxSwift を使ったコードでメモリリークしないことをUITest で保証したい

private let disposeBag = DisposeBag()
@IBOutlet private var button: UIButton!
@IBOutlet private var label: UILabel!

func viewDidLoad() {
    super.viewDidLoad*(
    button.rx.tap.subscribe(onNext: {
        self.label.text = "Hello world" // self がキャプチャされる
    })
    .disposed(by: disposeBag)
}

RxSwift で RxSwift.Resources を使用可能にする https://github.com/ReactiveX/RxSwift/blob/master/Documentation/GettingStarted.md#enabling-debug-mode

RxSwift.Resources.total を上記コードの前後で比較して、キャプチャされている数を比較

func testRxDoNotLeak() {
// snapshot before
let expectedTotal = Resources.total
autoreleasepool {
    let viewController = ViewController()
    // trigger subscriptions placed in viewDidLoad
    _ = viewController.view
}
// snapshot after
let actualTotal = Resources.total
XCTAssertEqual(expectedTotal, actualTotal)
}

Peopleやってみた

https://github.com/wantedly/yashima-ios/pull/6281

wantedly / ios_night

2019/06/27 19:30~20:30 #64

Why