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
99
The Roots of Go
Avatar for Baishampayan Ghose bg
1
1.7k
On Solving Problems
Avatar for Baishampayan Ghose bg
0
140

Other Decks in Programming

See All in Programming
テストカバレッジ100%を10年続けて得られた学びと品質
Avatar for もっち mottyzzz
2
580
Putting The Genie in the Bottle - A Crash Course on running LLMs on Android
Avatar for Iury Souza iurysza
0
140
機能追加とリーダー業務の類似性
Avatar for Rinchoku rinchoku
2
1.3k
Improving my own Ruby thereafter
Avatar for monochrome sisshiki1969
1
160
How Android Uses Data Structures Behind The Scenes
Avatar for HyunWoo Lee l2hyunwoo
0
420
AI時代のUIはどこへ行く？
Avatar for Yusuke Wada yusukebe
18
8.8k
もうちょっといいRubyプロファイラを作りたい (2025)
Avatar for osyoyu osyoyu
1
420
250830 IaCの選定~AWS SAMのLambdaをECSに乗り換えたときの備忘録~
Avatar for Takumi Abe east_takumi
0
390
Compose Multiplatform × AI で作る、次世代アプリ開発支援ツールの設計と実装
Avatar for Takeshi Hagikura thagikura
0
140
HTMLの品質ってなんだっけ？ “HTMLクライテリア”の設計と実践
Avatar for una unachang113
4
2.8k
Azure SRE Agentで運用は楽になるのか？
Avatar for KAMEGAWA Kazushi kkamegawa
0
2.1k
Rancher と Terraform
Avatar for Ryoma Fujiwara fufuhu
2
240

Featured

See All Featured
Scaling GitHub
Avatar for Zach Holman holman
463
140k
4 Signs Your Business is Dying
Avatar for Josh Pigford shpigford
184
22k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
Avatar for mongodb mongodb
48
9.7k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
Avatar for soudai sone soudai
PRO
188
55k
Principles of Awesome APIs and How to Build Them.
Avatar for Keavy McMinn keavy
126
17k
XXLCSS - How to scale CSS and keep your sanity
Avatar for Zaharenia Atzitzikaki sugarenia
248
1.3M
Testing 201, or: Great Expectations
Avatar for Joseph Mastey jmmastey
45
7.7k
The Success of Rails: Ensuring Growth for the Next 100 Years
Avatar for Eileen M. Uchitelle eileencodes
46
7.6k
Building an army of robots
Avatar for Kyle Neath kneath
306
46k
How To Stay Up To Date on Web Technology
Avatar for Chris Coyier chriscoyier
790
250k
Documentation Writing (for coders)
Avatar for Carmen Chung carmenintech
74
5k
RailsConf 2023
Avatar for Aaron Patterson tenderlove
30
1.2k

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