Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
RxJava での Observable のつくりかた
Search
Pine Mizune
November 18, 2015
Programming
0
150
RxJava での Observable のつくりかた
社内 ReactiveX 勉強会での発表資料
ソースコード:
https://github.com/pine613/rxnight
Pine Mizune
November 18, 2015
Tweet
Share
More Decks by Pine Mizune
See All by Pine Mizune
多言語対応と絵文字ジェネレーター / i18n of Emoji Generator
pine
0
800
C++ 製グラフィックライブラリ Skia の紹介 / Introduction to the graphics library Skia written by C++
pine
0
1.8k
asyncio + aiohttp で作るウェブサービス / How to develop a web service with asyncio and aiohttp
pine
0
670
Lerna による明示的疎結合アーキテクチャ
pine
1
640
CircleCI 2.0 x JavaScript
pine
3
550
Perl 卒業式
pine
0
340
Android Studio の気になる warnings を抑制する方法まとめ
pine
0
500
Emoji Generator meets Browser Extensions
pine
1
3k
近年の OSS 開発における CI 選択のベストプラクティス
pine
3
4.5k
Other Decks in Programming
See All in Programming
@Environment(\.keyPath)那么好我不允许你们不知道! / atEnvironment keyPath is so good and you should know it!
lovee
0
130
アセットのコンパイルについて
ojun9
0
130
HTMLの品質ってなんだっけ? “HTMLクライテリア”の設計と実践
unachang113
4
3k
奥深くて厄介な「改行」と仲良くなる20分
oguemon
1
610
テストカバレッジ100%を10年続けて得られた学びと品質
mottyzzz
2
620
知っているようで知らない"rails new"の世界 / The World of "rails new" You Think You Know but Don't
luccafort
PRO
1
190
Navigating Dependency Injection with Metro
zacsweers
3
5.5k
ユーザーも開発者も悩ませない TV アプリ開発 ~Compose の内部実装から学ぶフォーカス制御~
taked137
0
190
FindyにおけるTakumi活用と脆弱性管理のこれから
rvirus0817
0
550
Amazon RDS 向けに提供されている MCP Server と仕組みを調べてみた/jawsug-okayama-2025-aurora-mcp
takahashiikki
1
130
250830 IaCの選定~AWS SAMのLambdaをECSに乗り換えたときの備忘録~
east_takumi
0
400
AIを活用し、今後に備えるための技術知識 / Basic Knowledge to Utilize AI
kishida
22
5.9k
Featured
See All Featured
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.5k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
33
2.4k
Faster Mobile Websites
deanohume
309
31k
Learning to Love Humans: Emotional Interface Design
aarron
273
40k
The Art of Delivering Value - GDevCon NA Keynote
reverentgeek
15
1.7k
Fireside Chat
paigeccino
39
3.6k
GitHub's CSS Performance
jonrohan
1032
460k
RailsConf 2023
tenderlove
30
1.2k
Practical Orchestrator
shlominoach
190
11k
Building an army of robots
kneath
306
46k
How to Create Impact in a Changing Tech Landscape [PerfNow 2023]
tammyeverts
53
3k
Designing Experiences People Love
moore
142
24k
Transcript
RxJava での Observable のつくりかた Pine Mizune
もくじ • just • empty • from • range •
repeat • create
ソースコードはこちら • Java 7 ~ • ./gradlew run • https://github.com/pine613/rxnight
just (1/2) Observable .just("yano") .subscribe(new Action1<String>() { @Override public void
call(String name) { // Hello yano System.out.println("Hello, " + name + "!"); } });
just (2/2) Observable.create(new Observable.OnSubscribe<String>() { @Override public void call(final Subscriber<?
super String> observer) { observer.onNext("yano"); observer.onCompleted(); } }).subscribe(new Action1<String>() { @Override public void call(String name) { System.out.println("Hello, " + name + "!"); // Hello yano } });
empty Observable.<String>empty().doOnCompleted(new Action0() { @Override public void call() { System.out.println("Completed");
} }).subscribe(new Action1<String>() { @Override public void call(String name) { // not performed ... System.out.println("Hello, " + name + "!"); } });
range Observable .range(1, 10) .subscribe(new Action1<Integer>() { @Override public void
call(Integer value) { System.out.println(value); // 1, 2, ..., 10 } });
range Observable.range(1, 10).map(new Func1<Integer, Integer>() { @Override public Integer call(Integer
value) { return value * 2; // 2, 4, 6, ... } }) .reduce(0, new Func2<Integer, Integer, Integer>() { // sum @Override public Integer call(Integer sum, Integer value) { return sum + value; } }).subscribe(new Action1<Integer>() { @Override public void call(Integer value) { System.out.println(value); // 110 } });
repeat (1/2) Observable .just(1) .repeat(3) .subscribe(new Action1<Integer>() { @Override public
void call(Integer value) { System.out.println(value); // 1, 1, 1 } });
repeat (2/2) Observable .from(new Boolean[]{ true, false }) .repeat(3) .subscribe(new
Action1<Boolean>() { @Override public void call(Boolean value) { System.out.println(value); // true, false, ... } });
create (1/2) Observable<Integer> random = Observable.create( new Observable.OnSubscribe<Integer>() { @Override
public void call(final Subscriber<? super Integer> observer) { Random random = new Random(); observer.onNext(random.nextInt(10)); // 0 ~ 9 observer.onCompleted(); } });
create (2/2) Observable<Integer> random = Observable.create(new Observable.OnSubscribe<Integer>() { @Override public
void call(final Subscriber<? super Integer> observer) { Random random = new Random(); observer.onNext(random.nextInt(10)); // 0 ~ 9 observer.onCompleted(); } }); random.repeat().take(10).subscribe(new Action1<Integer>() { @Override public void call(Integer value) { System.out.println(value); // 7, 0, 8, ... } });
THANKS