Om

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OM @TAKUFUKUSHIMA

description

This slides for 天下一クライアントサイドJS MV*フレームワーク武道会, which is the event about JavaScript MV* frameworks. http://connpass.com/event/6910/

Transcript of Om

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OM@TAKUFUKUSHIMA

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OM ADDS MORE VALUES TO REACT.JS

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OM SWEET OM: (HIGH-)FUNCTIONAL FRONTEND ENGINEERING WITH

CLOJURESCRIPT AND REACT

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CONCLUSION: SIMPLICITY WINS

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PERFORMANCE

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UNDOTHE BIGGEST

DIFFERENTIATOR OF OM

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WHO DOES NEED UNDO ON THE CLIENT-SIDE?

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SHIFT TO THE WEB TECHNOLOGIES

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UNDO MADE EASY

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ClojureScript was a big enabler.— David Nolen, Creator of Om

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TIME TRAVEL;; Initial state.(def app-history (atom [@app-state]))

;; When the state is changed, it's added to the history.(add-watch app-state :history (fn [_ _ _ n] (when-not (= (last @app-history) n) (swap! app-history conj n)) (set! (.-innerHTML (.getElementById js/document "message")) (let [c (count @app-history)] (str c " Saved " (pluralize c "State"))))));; If the undo button is pressed, pop the state.(aset js/window "undo" (fn [e] (when (> (count @app-history) 1) (swap! app-history pop) (reset! app-state (last @app-history)))))

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CLOJURESCRIPT ROCKS1. ClojureScript ecosystem

2. Macros3. Persistent data structures

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1. CLOJURESCRIPT ECOSYSTEM

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GOOD PARTS OF CLOJURESCRIPT▸ Clojure

▸ 3rd party libraries▸ Source Map

▸ Interop with JavaScript

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2. MACROS

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MACRO SAVES YOUR TIMECOMPILATION TIME META PROGRAMMING,

WHICH IS HARD IN JAVASCRIPT.▸ prismatic/om-tools

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3. PERSISTENT DATA STRUCTURES

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PERSISTENT DATA STRURCTURES ARE MEMORY EFFICIENT

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GET UNDO NOW

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WRAP-UPSIMPLICITY AND UNDO

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THE END OF SLIDES; ANY QUESTION?

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REFERENCES▸ Om sweet Om: (high-)functional frontend engineering

with ClojureScript and React - http://blog.getprismatic.com/om-sweet-om-high-functional-

frontend-engineering-with-clojurescript-and-react/▸ PrismaticEngineering Tweet - https://twitter.com/

PrismaticEng/status/478988034407276546▸ Vue.js Performance Comparisons - http://vuejs.org/

perf/

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REFERENCES▸ IMMUTABILITY, INTERACTIVITY & JAVASCRIPT, Balcerona Future JS: http://futurejs.org/agenda/

immutability-interactivity-javascript▸ GoyaPixel - http://jackschaedler.github.io/goya/▸ Time Travel, dosync - http://swannodette.github.io/

2013/12/31/time-travel/▸ Adobe Photoshop.com - http://www.photoshop.com/

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REFERENCES▸ Google Docs - https://docs.google.com/

▸ Atom - https://atom.io/▸ Git - http://git-scm.com/

Other pictures are distributed under © Taku Fukushima