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
Functional Reactive Programming for web apps
Search
Sponsored
·
SiteGround - Reliable hosting with speed, security, and support you can count on.
→
Sergio Rafael Gianazza
April 23, 2015
Programming
260
0
Share
Functional Reactive Programming for web apps
Sergio Rafael Gianazza
April 23, 2015
More Decks by Sergio Rafael Gianazza
See All by Sergio Rafael Gianazza
Meetup.js - React.js
gianu
1
360
Why Bacon is actually good for your health
gianu
3
230
Other Decks in Programming
See All in Programming
TSKaigi Night Talks 2026_TypeScriptでサプライチェーンの整合性を型に閉じ込める
geekplus_tech
0
260
AutonomyとControlのあいだ:Graflowで記述するAIエージェント協調
myui
0
100
脅威をエンジニアリングの糧にして――現場編 / Turning Threats into Engineering Fuel — Field Edition
nrslib
0
250
関係性から理解する"同一性"の型用語たち
pvcresin
2
630
運用エージェントは "作る" から "育てる" へ - 記憶と自己進化の3層設計パターン / self-evolving-agents-three-layer-agent-design
gawa
12
3.4k
TypeSpec で繋ぐ複数プロダクトの型安全
maroon8021
1
360
Lemonade + Foundry Toolkit でお手軽アプリ開発
seosoft
1
270
AI駆動開発勉強会 広島支部 第一回勉強会 AI駆動開発概要とワークショップ
hayatoshimiu
0
440
タクシーアプリ『GO』の バックエンド開発のおける AI利活用と若者のすべて
pyama86
3
1.8k
GitHub Copilot CLIのいいところ
htkym
2
1.3k
Old Dog, New Tricks: The Java 25 Reinvention - JNation
bazlur_rahman
0
140
IBM Bobを活用したレガシーアプリの最新化
oniak3ibm
PRO
1
170
Featured
See All Featured
Color Theory Basics | Prateek | Gurzu
gurzu
0
340
From Legacy to Launchpad: Building Startup-Ready Communities
dugsong
0
220
Writing Fast Ruby
sferik
630
63k
Performance Is Good for Brains [We Love Speed 2024]
tammyeverts
12
1.7k
Leadership Guide Workshop - DevTernity 2021
reverentgeek
1
300
Mobile First: as difficult as doing things right
swwweet
225
10k
Keith and Marios Guide to Fast Websites
keithpitt
413
23k
We Analyzed 250 Million AI Search Results: Here's What I Found
joshbly
1
1.3k
Claude Code のすすめ
schroneko
67
220k
Google's AI Overviews - The New Search
badams
0
1k
Building a A Zero-Code AI SEO Workflow
portentint
PRO
0
550
Mozcon NYC 2025: Stop Losing SEO Traffic
samtorres
1
250
Transcript
for Web Apps FUNCTIONAL REACTIVE PROGRAMMING
Sergio Rafael Gianazza Leonardo Garcia Crespo “gianu” “lenny” @sgianazza @leogcrespo
github.com/gianu github.com/leoasis
None
None
None
None
♥
♥
♥ FRP
Temario Problema Problema con las soluciones actuales Solución Funcional Demo
Conclusiones
Temario Problema Problema con las soluciones actuales Solución Funcional Conclusiones
Demo
Aplicaciones mas interactivas Aplicaciones mas interactivas
Manipulacion de estado manipulacion de estado
T = S(S-‐1) T = Número de transiciones S
= CanLdad de estados
vista = f(estado)
estado mutable estado mutable
function doSomething(data, callback) { data.valueThatITrust = 42; callback(); utilityFn(data); console.log(data.valueThatITrust);
// What's the output? }
multiples formas de causar cambios multiples formas de causar cambios
Modelo mental modelo mental
Temario Problema Problema con las soluciones actuales Solución Funcional Conclusiones
Demo
MVC MVC Model View Controller Controller Model View
MVC MVC Estado mutable
MVC MVC Estado mutable Data Binding
MVC MVC Estado mutable Data Binding Eventos ad hoc
MVC MVC Estado mutable Data Binding Eventos ad hoc Cambios
en cascada
Temario Problema Problema con las soluciones actuales Solución Funcional Conclusiones
Demo
¿Que es FRP? ¿Que es FRP?
var a = 1; var b = 2; var c
= a + b; b = 3; console.log(c); // Imperativo = 3, reactivo = 5
map map
reduce reduce
scan scan
merge merge
arquitectura arquitectura
MVI MVI Model View Intent Model View Intent
click keydow n input API rcv Lmeout
intent intent click keydow n input API rcv Lmeout
intent intent click keydow n input API rcv Lmeout actions
actions
intent intent click keydow n input API rcv Lmeout reduce
update(acLon, state) actions actions
intent intent click keydow n input API rcv Lmeout reduce
actions actions iniLal state update(acLon, state)
intent intent click keydow n input API rcv Lmeout reduce
actions actions iniLal state states states update(acLon, state)
intent intent click keydow n input API rcv Lmeout reduce
map view(state, inputs) actions actions states states iniLal state view elements view elements update(acLon, state)
intent intent click keydow n input API rcv Lmeout reduce
map view(state, inputs) render actions actions states view elements states view elements DOM DOM iniLal state update(acLon, state)
intent intent click keydow n input API rcv Lmeout reduce
map view(state, inputs) render actions actions states view elements states view elements DOM DOM iniLal state update(acLon, state)
+
EJEMPLO EJEMPLO
ejemplo ejemplo input subm it API receive reduce map
ejemplo ejemplo intent.createBlogPost input subm it API receive reduce
map actions actions { type: CREATE_POST } { type: RECEIVE_POST }
ejemplo ejemplo intent.createBlogPost input subm it API receive reduce
map actions actions states states { posts: [] } { type: CREATE_POST } { type: RECEIVE_POST } { posts: [ { name: “New post”} ]} update(acLon, state)
ejemplo ejemplo intent.createBlogPost input subm it API receive reduce
map view(state, inputs) actions actions states view elements states view elements { posts: [] } { type: CREATE_POST } { type: RECEIVE_POST } <Posts posts={posts} /> { posts: [ { name: “New post”} ]} update(acLon, state)
ejemplo ejemplo intent.createBlogPost input subm it API receive reduce
map view(state, inputs) render actions actions states view elements states view elements DOM DOM { posts: [] } { type: CREATE_POST } { type: RECEIVE_POST } <Posts posts={posts} /> { posts: [ { name: “New post”} ]} update(acLon, state)
Temario Problema Problema con las soluciones actuales Solución Funcional Conclusiones
Demo
Temario Problema Problema con las soluciones actuales Solución Funcional Conclusiones
Demo
MVI MVI intent intent click keydow n input API rcv
Lmeout reduce map update view(state, inputs) render actions actions states view elements states view elements DOM DOM iniLal state
VENTAJAs VENTAjas
desventajas desventajas
recursos blog.amplifiedapp.com/talks github.com/amplifiedapp/jsconfuy-‐2015 hep:/ /meetupjs.herokuapp.com/
Gracias! and keep rockin’! Sergio Rafael Gianazza Leonardo Garcia Crespo