Why you should be excited about ClojureScript

Jul 22, 20113 likes3,077 views

ClojureScript allows Clojure code to compile to JavaScript. Created by Rich Hickey and friends, it provides optimizations for performance while maintaining readability and abstraction. As a Lisp for JavaScript, ClojureScript controls complexity on the web and benefits from JavaScript's status as a compilation target for many languages.

Why you should be excited about

ClojureScript born y
esterd
ay!

@fronx

faye

http://twitter.com/#!/jcoglan/status/93818247509581824

ClojureScript: Clojure code
that compiles to JavaScript
+ op
timiz
ation
!

Created by Rich Hickey, Clojure/core, and friends

https://github.com/clojure/clojurescript/blob/master/samples/hello

A LISP for the modern world.
Awesome for controlling complexity!

“Clojure is arguably simpler, more powerful
and more robust than JS.” — Rich Hickey

“JavaScript is assembly
language for the web.”

Scott Hanselman

http://www.hanselman.com/blog/JavaScriptIsAssemblyLanguageForTheWebSematicMarkupIsDeadCleanVsMachinecodedHTML.aspx

optimize
performance readability
efﬁcient use abstraction
of resources
agility
weirdnesses

There are some things
computers are just better
at than humans.

readability
abstraction
agility
human

e.g. miniﬁcation
machine
performance
efﬁcient use of resources
weirdnesses

readability
abstraction
agility
human

optimizing compiler (<= awesome!)
machine
performance
efﬁcient use of resources
weirdnesses

“Google’s Closure compiler is a true
optimizing compiler providing
powerful dead-code elimination.”

@fogus
+ symbol replacement,
expression rewriting,
transformation

http://blog.fogus.me/2011/07/21/compiling-clojure-to-javascript-pt1/

BUT!?

“Debugging?!?”

“People should learn how to
write good JavaScript instead!”

(discuss)

“JavaScript is assembly
language for the web.”

@fronx

more:
http://cloud.github.com/downloads/clojure/clojurescript/clojurescript%20slides.pdf

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Why you should be excited about ClojureScript

1. Why you should be excited about ClojureScript born y esterd ay! @fronx

2. faye http://twitter.com/#!/jcoglan/status/93818247509581824

3. ClojureScript: Clojure code that compiles to JavaScript + op timiz ation ! Created by Rich Hickey, Clojure/core, and friends

4. https://github.com/clojure/clojurescript/blob/master/samples/hello

5. A LISP for the modern world. Awesome for controlling complexity! “Clojure is arguably simpler, more powerful and more robust than JS.” — Rich Hickey

6. “JavaScript is assembly language for the web.” Scott Hanselman http://www.hanselman.com/blog/JavaScriptIsAssemblyLanguageForTheWebSematicMarkupIsDeadCleanVsMachinecodedHTML.aspx

7. JavaScript == target language for other languages CoffeeScript Coco Parsec CoffeeScript JS11 Kaffeine Jack move Narcissus Traceur EcmaScript 5 Parser (es-lab) EcmaScript 5 Parser (qfox) reflect.js bdParse parse-js Closure Compiler UglifyJS Caja ADsafe FBJS Jacaranda Microsoft Web Sandbox Gatekeeper Dojo Secure SafeJS MileScript Mascara Roy Streamline.js mobl StratifiedJS NarrativeJS jwacs Jscex TameJS ContextJS Objective-J JS2 jangaroo Flapjax jLang Restrict Mode TIScript HotRuby rb2js RubyJS Red Quby Opal 8ball PYXC-PJ Pyjamas Skulpt PyCow PyvaScript GWT Java2Script j2js scalagwt jsc JSIL Script# ClojureScript clojurejs ClojureScript EdgeLisp Fargo Moby Scheme nconc Parenscript Ralph scheme2js Scriptjure Sibilant Spock Ocamljs O'Browser Js_of_ocaml UHC YHC jshaskell Clamato Silver Smalltalk JTalk Lively Kernel Emscripten mala Clue NS Basic/App Studio qb.js Haxe Fantom LZX (Laszlo XML) Fun Ur WebSharper mobl E Sugar Opa Waterbear JsMorphic ScriptBlocks Oia Quixe Gnusto Logo Interpreter p2js OMG Reb2Static RPN phype OP4JS jison OMeta/JS PEG.js languagejs Canopy , it’s lik JS/CC jsparse ReParse p4js JSGLR antlr Cruiser.Parse Closure Compiler the JV burrito javascript types altJS jswiki e AST Documentation Spidermonkey Parser API JsonML AST treehugger JavaScript Shaper M! https://github.com/jashkenas/coffee-script/wiki/List-of-languages-that-compile-to-JS

8. Why is this happening?

9. optimize performance readability efﬁcient use abstraction of resources agility weirdnesses

10. There are some things computers are just better at than humans.

11. readability abstraction agility human e.g. miniﬁcation machine performance efﬁcient use of resources weirdnesses

12. readability abstraction agility human optimizing compiler (<= awesome!) machine performance efﬁcient use of resources weirdnesses

13. “Google’s Closure compiler is a true optimizing compiler providing powerful dead-code elimination.” @fogus + symbol replacement, expression rewriting, transformation http://blog.fogus.me/2011/07/21/compiling-clojure-to-javascript-pt1/

14. BUT!? “Debugging?!?” “People should learn how to write good JavaScript instead!” (discuss)

15. “JavaScript is assembly language for the web.”

16. @fronx more: http://cloud.github.com/downloads/clojure/clojurescript/clojurescript%20slides.pdf

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