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
Tyrannosaurus Rx
Search
James Hughes
September 03, 2014
Programming
0
110
Tyrannosaurus Rx
Basic overview of Rx (Reactive Extensions)
James Hughes
September 03, 2014
Tweet
Share
More Decks by James Hughes
See All by James Hughes
Functional Programming with Clojure
kouphax
1
100
React
kouphax
2
690
Play for (Java|Scala)
kouphax
0
100
Devops: A Case Study
kouphax
0
65
Scala for C# Developers
kouphax
5
2.5k
Dropwizard - Production Ready Web Services
kouphax
3
1.5k
Scala for Fun & Profit
kouphax
3
610
What Agile Means To Me
kouphax
0
120
Neo4J: A Case Study
kouphax
3
600
Other Decks in Programming
See All in Programming
Kotlin2でdataクラスの copyメソッドを禁止する/Data class copy function to have the same visibility as constructor
eichisanden
1
130
Golang と Erlang
taiyow
8
1.9k
PLoP 2024: The evolution of the microservice architecture pattern language
cer
PRO
0
1.6k
Amazon Neptuneで始めてみるグラフDB-OpenSearchによるグラフの全文検索-
satoshi256kbyte
4
320
CSC305 Lecture 13
javiergs
PRO
0
130
讓數據說話:用 Python、Prometheus 和 Grafana 講故事
eddie
0
350
EventSourcingの理想と現実
wenas
6
2.1k
Dev ContainersとGitHub Codespacesの素敵な関係
ymd65536
1
120
Synchronizationを支える技術
s_shimotori
1
150
Server Driven Compose With Firebase
skydoves
0
390
2万ページのSSG運用における工夫と注意点 / Vue Fes Japan 2024
chinen
3
1.3k
Snowflake x dbtで作るセキュアでアジャイルなデータ基盤
tsoshiro
2
430
Featured
See All Featured
Faster Mobile Websites
deanohume
304
30k
Gamification - CAS2011
davidbonilla
80
5k
Become a Pro
speakerdeck
PRO
24
5k
Practical Tips for Bootstrapping Information Extraction Pipelines
honnibal
PRO
9
680
The Power of CSS Pseudo Elements
geoffreycrofte
72
5.3k
Music & Morning Musume
bryan
46
6.1k
Imperfection Machines: The Place of Print at Facebook
scottboms
264
13k
[Rails World 2023 - Day 1 Closing Keynote] - The Magic of Rails
eileencodes
32
1.8k
The World Runs on Bad Software
bkeepers
PRO
65
11k
GitHub's CSS Performance
jonrohan
1030
460k
A Philosophy of Restraint
colly
203
16k
Scaling GitHub
holman
458
140k
Transcript
TYRANNOSAURUS RX
REACTIVE EXTENSIONS
None
Java JS C# Clojure Groovy Scala Kotlin Python Ruby C++
Haskell
var list = [1,2,3,4,5,6,7]; ! for(var i = 0; i
< list.length; i++) { console.log(list[i]) }
var list = [1,2,3,4,5,6,7]; ! list.forEach(function(item) { console.log(item) })
var list = [Promise(), Promise()…]; ! list.forEach(function(item) { console.log(item.get()) })
TIME RUINS EVERYTHING
None
None
None
OBSERVABLES LISTS WITH TIME REIFIED EVENT STREAM PUSH BASED
CREATING OBSERVABLES ITERABLE FUTURE/PROMISE EVENTS RULES OBSERVABLE
CREATING OBSERVABLES Observable.from(new String[] { "The Joker", "The Riddler", "Penguin",
"Catwoman"})
CREATING OBSERVABLES baddies.subscribe((baddie) -> { out.println(baddie + “ is bad.”)
})
CREATING OBSERVABLES The Joker is bad. The Riddler is bad.
Penguin is bad. Catwoman is bad.
CREATING OBSERVABLES class _ extends Subscriber<String> { void onCompleted() {}
void onError(Throwable t) {} void onNext(String s){} }
CREATING OBSERVABLES onNext("The Joker”)
CREATING OBSERVABLES onNext("The Joker”) onNext("The Riddler”)
CREATING OBSERVABLES onNext("The Joker”) onNext("The Riddler”) onNext(“Penguin")
CREATING OBSERVABLES onNext("The Joker”) onNext("The Riddler”) onNext(“Penguin") onNext(“Catwoman")
CREATING OBSERVABLES onCompleted() onNext("The Joker”) onNext("The Riddler”) onNext(“Penguin") onNext(“Catwoman")
ERROR HANDLING onNext("The Joker”)
onNext("The Joker”) onNext("The Riddler”) ERROR HANDLING
X onNext("The Joker”) onNext("The Riddler”) ERROR HANDLING
X onNext("The Joker”) onNext("The Riddler”) onError(ex) ERROR HANDLING
TRANSFORMING OBSERVABLES TURN AN OBSERVABLE OF ONE TYPE INTO ANOTHER
TRANSFORMING OBSERVABLES Observable ints = Observable .interval(1, SECONDS); ! ints.map((i)
-> i + 1) .map((i) -> i + “ seconds”) .subscribe(out::println)
TRANSFORMING OBSERVABLES map map
TRANSFORMING OBSERVABLES 1 seconds 2 seconds 3 seconds 4 seconds
...
TRANSFORMING OBSERVABLES flatMap(), groupBy(), buffer(), window()
FILTERING OBSERVABLES SELECT AND REJECT ITEMS EMITTED BY AN OBSERVABLE
FILTERING OBSERVABLES var keys = Rx.DOM.keypress(el) var ints = keys.filter(isNumeric)
! ints.subscribe(console.log)
FILTERING OBSERVABLES filter X X
FILTERING OBSERVABLES distinct(), timeout(), ignoreElements(), throttleFirst(), debounce(), sample(), first(), last(),
take(), skip()
COMBINING OBSERVABLES COMPOSING MULTIPLE OBSERVABLES INTO A SINGLE OBSERVABLE
COMBINING OBSERVABLES Observable goodies = Observable.from( new String[]{ "Batman", "Robin",
"Alfred", “Batgirl"}); ! goodies.zipWith(baddies, (g,b) -> g + " punches " + b)
COMBINING OBSERVABLES zipWith
COMBINING OBSERVABLES Batman punches The Joker Robin punches The Riddler
Alfred punches Penguin Batgirl punches Catwoman
STUFF AND OTHER THINGS retry(), delay(), timestamp(), amb(), defaultIfEmpty(), reduce(),
count()
None
TYRANNOSAURUS RX