production clojurescript · production clojurescript paul degrandis paul@tutorspree.com @ohpauleez...

PRODUCTION CLOJURESCRIPT

Paul deGrandispaul@tutorspree.com

@ohpauleez

ClojureNYC meetup:: June 20, 2012

Thursday, June 21, 12

A BIT OF HISTORYpartial renders and choosing ClojureScript

•New business model,new tooling

• Evaluation andproving ground

• Constraints andtradeoffs

Kent Beck

Thursday, June 21, 12

CONSTRAINTS

•Never trust the client

•Design for complete failure

• SEO makes us money

• Take “engineering” out ofcontent related tasks

•No pointless infrastructure;DB took most person-hours

https://github.com/ohpauleez/se_checklist

Thursday, June 21, 12

SHORELEAVE

• C/Unix fashion - built in parallel with apps

• Lisp fashion - bottom-up utilities

• Security, idiomatic interfaces, HTML5 capabilities, CLJS advantages

Thursday, June 21, 12

SHORELEAVE• CLJS’ process problem

• publish/subscribe - functions, atoms, storage, workers can be topics

events, callbacks, the DOM

Thursday, June 21, 12

SHORELEAVE• All calls to between server-client are CSRF-protected

• “I can go anywhere”

exposing server-side namespaces

Client

ServerThursday, June 21, 12

CLJS:ONE COMPARISON

• Events - (fire ...) (react-to ...)

• Tightly coupled to “bus”; Are predicates useful?

• Event logic gets littered in functions

• App structure is similar, wiring an application is similar

• Less browser support, less remote support

•Much better documentation/learning; More eyes; More hands

Thursday, June 21, 12

BUILDING AN APPLICATION

• main.cljs - set history, brepl, .-onload, hook up pubsub

• controllers.cljs - join library, API, and DOM tweaks

• listeners.cljs - attach all DOM listeners

• render.cljs - define all DOM actions

• VERB.cljs - additional libraries, `search.cljs`

structure

Thursday, June 21, 12

BUILDING AN APPLICATIONstructure

Thursday, June 21, 12

QUICK DEMOS

Thursday, June 21, 12

Paul deGrandispaul@tutorspree.com

@ohpauleez

PRODUCTION CLOJURESCRIPT

Comments, Questions, Concerns

Thursday, June 21, 12