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
Migrating to Clojure. So much fn.
Search
Jan Stępień
February 27, 2014
Programming
1
410
Migrating to Clojure. So much fn.
Slides from a talk I delivered on 27.02.2014 at Lambda Days in Kraków, Poland.
Jan Stępień
February 27, 2014
Tweet
Share
More Decks by Jan Stępień
See All by Jan Stępień
graalvm-jug-bb
jan
1
210
That Looks Oddly Familiar
jan
0
410
Native Clojure
jan
0
240
Native Clojure with GraalVM
jan
0
760
Compiling a lisp into a lisp using a lisp
jan
0
160
Mutation testing in continuous delivery pipelines
jan
0
190
Self-contained systems: an introduction
jan
0
200
Let's just test that real quick
jan
1
420
Combating spam, or how I befriended the Killer Rabbit of Caerbannog
jan
0
290
Other Decks in Programming
See All in Programming
チームのテスト力を総合的に鍛えて品質、スピード、レジリエンスを共立させる/Testing approach that improves quality, speed, and resilience
goyoki
5
960
技術同人誌をMCP Serverにしてみた
74th
1
670
The Niche of CDK Grant オブジェクトって何者?/the-niche-of-cdk-what-isgrant-object
hassaku63
1
330
GitHub Copilot and GitHub Codespaces Hands-on
ymd65536
2
150
おやつのお供はお決まりですか?@WWDC25 Recap -Japan-\(region).swift
shingangan
0
140
Azure AI Foundryではじめてのマルチエージェントワークフロー
seosoft
0
190
「テストは愚直&&網羅的に書くほどよい」という誤解 / Test Smarter, Not Harder
munetoshi
0
180
Advanced Micro Frontends: Multi Version/ Framework Scenarios @WAD 2025, Berlin
manfredsteyer
PRO
0
320
Rails Frontend Evolution: It Was a Setup All Along
skryukov
0
190
PHP 8.4の新機能「プロパティフック」から学ぶオブジェクト指向設計とリスコフの置換原則
kentaroutakeda
2
980
#QiitaBash MCPのセキュリティ
ryosukedtomita
1
1.4k
Android 16KBページサイズ対応をはじめからていねいに
mine2424
0
170
Featured
See All Featured
Making Projects Easy
brettharned
116
6.3k
Principles of Awesome APIs and How to Build Them.
keavy
126
17k
jQuery: Nuts, Bolts and Bling
dougneiner
63
7.8k
Measuring & Analyzing Core Web Vitals
bluesmoon
7
510
Producing Creativity
orderedlist
PRO
346
40k
ReactJS: Keep Simple. Everything can be a component!
pedronauck
667
120k
Product Roadmaps are Hard
iamctodd
PRO
54
11k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
507
140k
Documentation Writing (for coders)
carmenintech
72
4.9k
Designing for Performance
lara
610
69k
Practical Tips for Bootstrapping Information Extraction Pipelines
honnibal
PRO
20
1.3k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
229
22k
Transcript
Migrating to Clojure So much fn @janstepien
I work at
I work at
None
© Seph Swain 2008 flickr.com/photos/seph_swain/2735367665
(something new)
© Seph Swain 2008 flickr.com/photos/seph_swain/2741483308
None
feature freeze! no
↓ ╭────────────╮ │ http proxy │ ╰────────────╯ ↓ ↓ ╭───────────────╮
╭─────────────╮ │ ruby on rails │ ← │ widgets! │ ╰───────────────╯ ╰─────────────╯ ↓ ╭──────╮ │ db │ ╰──────╯
↓ ╭────────────╮ │ http proxy │ ╰────────────╯ ↓ ↓ ╭───────────────╮
╭─────────────╮ │ ruby on rails │ │ widgets! │ ╰───────────────╯ ╰─────────────╯ ↓ ↓ ╭──────╮ ╭─────────────╮ │ db │ ← │ data acc. │ ╰──────╯ ╰─────────────╯
↓ ╭───────────────────────╮ │ │ │ ╭───────╯ │ ruby on rails
│ ↓ │ │ ╭─────────────╮ │ │ │ widgets! │ ╰───────────────╯ ╰─────────────╯ ↓ ↓ ╭──────╮ ╭─────────────╮ │ db │ ← │ data acc. │ ╰──────╯ ╰─────────────╯
/colour-red /50-100-euro /jeans/esprit
↓ ╭───────────────────────╮ │ │ │ ╭───────╯ │ ruby on rails
│ ↓ │ │ ╭─────────────╮ │ │ │ widgets! │ ╰───────────────╯ ╰─────────────╯ ↓ ↓ ╭──────╮ ╭─────────────╮ │ db │ ← │ data acc. │ ╰──────╯ ╰─────────────╯
↓ ╭───────────────────────╮ │ │ │ ╭───────╯ │ ruby on rails
│ ↓ │ │ ╭─────────────╮ │ │ │ clojure │ ╰───────────────╯ ╰─────────────╯ ↓ ↓ ╭──────╮ ╭─────────────╮ │ db │ ← │ data acc. │ ╰──────╯ ╰─────────────╯
(cons )
a slide intentionally left blank
widgets the cornerstone
{:fetch (fn [env] (get-data-for env)) :view (fn [fetched-data] (render fetched-data))}
(map render widgets) ↓ (pmap render widgets)
templating worst nightmare
© omefrans 2010 flickr.com/photos/omefrans/4238610113
<div id=”main”> text </div> {:tag :div :attr {:id ”main”} :content
[”text”]}
repl everywhere
tools to the rescue
before 54 machines
after 10 machines* * traffic grew twofold
mistakes we made a lot
(my {:yet :another} (somewhat [:helpful]) (dsl!))
hiring not as bad as it seems
future a lot to be done
summing it up it was a good idea
Migrating to Clojure So much fn jan.stepien@stylefruits.de jan@stepien.cc @janstepien