Upgrade to Pro — share decks privately, control downloads, hide ads and more …

The Taming of the Deftype

Avatar for Baishampayan Ghose Baishampayan Ghose
May 11, 2012
Programming
2
160

The Taming of the Deftype

Slides from a talk I presented at Clojure/West 2012, San Jose, CA.

Avatar for Baishampayan Ghose

Baishampayan Ghose

May 11, 2012
Tweet

More Decks by Baishampayan Ghose

See All by Baishampayan Ghose
The Revenge of the Pragmatists
Avatar for Baishampayan Ghose bg
0
260
The Postmodern Programmer
Avatar for Baishampayan Ghose bg
0
100
The Roots of Go
Avatar for Baishampayan Ghose bg
1
1.8k
On Solving Problems
Avatar for Baishampayan Ghose bg
0
140

Other Decks in Programming

See All in Programming
メタプログラミングで実現する「コードを仕様にする」仕組み/nikkei-tech-talk43
Avatar for 日本経済新聞社 エンジニア採用事務局 nikkei_engineer_recruiting
0
160
コーディングルールの鮮度を保ちたい / keep-fresh-go-internal-conventions
Avatar for NAGATA Hiroaki handlename
0
160
Event Storming
Avatar for Henning Schwentner hschwentner
3
1.3k
AIとペアプロして処理時間を97%削減した話 #pyconshizu
Avatar for Kashun Yoshida kashewnuts
1
210
15年目のiOSアプリを1から作り直す技術
Avatar for TAKEDA Yuki teakun
1
610
猫の手も借りたい！ので AIエージェント猫を作って社内に放した話 Claude Code × Container Lambda の Slack Bot "DevNeko"
Avatar for naramomi7 naramomi7
0
250
AI活用のコスパを最大化する方法
Avatar for Ochtum ochtum
0
120
CopilotKit + AG-UIを学ぶ
Avatar for NearMeの技術発表資料です nearme_tech
PRO
1
130
Fundamentals of Software Engineering In the Age of AI
Avatar for Dan Vega therealdanvega
1
200
Python’s True Superpower
Avatar for Hynek Schlawack hynek
0
200
new(1.26) ← これすき / kamakura.go #8
Avatar for utagawa kiki utgwkk
0
1.7k
AIコーディングの理想と現実 2026 | AI Coding: Expectations vs. Reality 2026
Avatar for Tomohisa Takaoka tomohisa
0
1.1k

Featured

See All Featured
A Guide to Academic Writing Using Generative AI - A Workshop
Avatar for Kenji Saito ks91
PRO
0
230
No one is an island. Learnings from fostering a developers community.
Avatar for Antonio thoeni
21
3.6k
Context Engineering - Making Every Token Count
Avatar for Addy Osmani addyosmani
9
740
How to Ace a Technical Interview
Avatar for Jacob Kaplan-Moss jacobian
281
24k
A Soul's Torment
Avatar for Nat Ma seathinner
5
2.4k
Design of three-dimensional binary manipulators for pick-and-place task avoiding obstacles (IECON2024)
Avatar for konakalab konakalab
0
370
Beyond borders and beyond the search box: How to win the global "messy middle" with AI-driven SEO
Avatar for David Carrasco davidcarrasco
3
65
Navigating the Design Leadership Dip - Product Design Week Design Leaders+ Conference 2024
Avatar for Andy Polaine apolaine
0
220
How to build an LLM SEO readiness audit: a practical framework
Avatar for Nick Samuel nmsamuel
1
660
Claude Code のすすめ
Avatar for schroneko schroneko
67
220k
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
Avatar for Vitaly Friedman smashingmag
254
22k
The State of eCommerce SEO: How to Win in Today's Products SERPs - #SEOweek
Avatar for Aleyda Solis aleyda
2
9.8k

Transcript

  1. deftype the taming of the Baishampayan “BG” Ghose @ghoseb Clojure/West

    2012 Friday 16 March 12

  2. @ghoseb helpshift.com Friday 16 March 12

  3. @ghoseb helpshift.com I caught a dead mouse in the office

    the other day Friday 16 March 12

  4. MOTIVATION Friday 16 March 12

  5. Friday 16 March 12

  6. Friday 16 March 12

  7. Maps Friday 16 March 12

  8. Records Friday 16 March 12

  9. Types Friday 16 March 12

  10. TO SUMMARIZE Friday 16 March 12

  11. deftype Performance Collection Abstractions Named Type Mutable Fields Full Control

    Friday 16 March 12

  12. defrecord Performance Collection Abstractions Named Type HashMap Semantics * Friday

    16 March 12

  13. maps Every other use-case Friday 16 March 12

  14. IN SHORT Friday 16 March 12

  15. Use Maps! Friday 16 March 12

  16. Dive into deftype Friday 16 March 12

  17. Use the source, Luke! Friday 16 March 12

  18. IPersistentMap Seqable Associative IPersistentCollection ILookup Counted IFn IPersistentSet IObj Object

    IMeta IPersistentStack Indexed IPersistentVector Friday 16 March 12

  19. IPersistentMap Seqable Associative IPersistentCollection ILookup Counted IFn IPersistentSet IObj Object

    IMeta IPersistentStack Indexed IPersistentVector Friday 16 March 12

  20. Friday 16 March 12

  21. Scaffold Friday 16 March 12

  22. ‘scaffold’ by Christophe Grand Friday 16 March 12

  23. } Interface we want Ancestor interface Method sigs. . .

    . . . . . Friday 16 March 12

  24. bit.ly/clj-scaffold steal this code! Friday 16 March 12

  25. A Note About IFn Holy arities, Batman! Friday 16 March

    12

  26. A Note About IFn Should implement all to avoid non-helpful

    exception. Friday 16 March 12

  27. MUTABLE TYPES Friday 16 March 12

  28. ^:volatile-mutable ^:unsynchronized-mutable atomic reads & writes a ‘vanilla’ Java mutable

    field Friday 16 March 12

  29. Friday 16 March 12

  30. Printing Friday 16 March 12

  31. clojure.core/print-method for humans Friday 16 March 12

  32. clojure.core/print-dup for the reader Friday 16 March 12

  33. #mylib.core.MyType[1,2,3] Object Literal Reader Syntax Friday 16 March 12

  34. Factory Functions Friday 16 March 12

  35. Hide Implementation Details Avoid Importing Java Classes Friday 16 March

    12

  36. (my-type :foo :bar) (import myns.MyType) (MyType. [:foo :bar]) vs. Friday

    16 March 12

  37. AN EXAMPLE IMPLEMENTATION (a weekend hack) Friday 16 March 12

  38. bit.ly/clj-chainmap steal this code! Friday 16 March 12

  39. Fin Friday 16 March 12

  40. Friday 16 March 12