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
iOSエンジニア向けの英語学習アプリを作る！
Avatar for yukawashouhei yukawashouhei
0
190
育てるアーキテクチャ：戦い抜くPythonマイクロサービスの設計と進化戦略
Avatar for fujidomoe fujidomoe
1
170
CSC509 Lecture 06
Avatar for Javier Gonzalez-Sanchez javiergs
PRO
0
260
AI Coding Meetup #3 - 導入セッション / ai-coding-meetup-3
Avatar for Masayuki Izumi izumin5210
0
3.3k
TFLintカスタムプラグインで始める Terraformコード品質管理
Avatar for bells17 bells17
2
160
Writing Better Go: Lessons from 10 Code Reviews
Avatar for Konrad Reiche konradreiche
0
670
CSC509 Lecture 03
Avatar for Javier Gonzalez-Sanchez javiergs
PRO
0
330
なぜあの開発者はDevRelに伴走し続けるのか / Why Does That Developer Keep Running Alongside DevRel?
Avatar for nrs nrslib
3
400
uniqueパッケージの内部実装を支えるweak pointerの話
Avatar for magavel magavel
0
980
Pythonスレッドとは結局何なのか？ CPython実装から見るNoGIL時代の変化
Avatar for curekoshimizu curekoshimizu
5
1.8k
CSC305 Lecture 06
Avatar for Javier Gonzalez-Sanchez javiergs
PRO
0
220
Go Conference 2025: Goで体感するMultipath TCP ― Go 1.24 時代の MPTCP Listener を理解する
Avatar for Takeru Hayasaka takehaya
9
1.7k

Featured

See All Featured
Git: the NoSQL Database
Avatar for Brandon Keepers bkeepers
PRO
431
66k
What's in a price? How to price your products and services
Avatar for Michael Herold michaelherold
246
12k
Producing Creativity
Avatar for Steve Smith orderedlist
PRO
347
40k
Agile that works and the tools we love
Avatar for Rasmus Luckow-Nielsen rasmusluckow
331
21k
Side Projects
Avatar for Sacha Greif sachag
455
43k
Reflections from 52 weeks, 52 projects
Avatar for Jefferson Lam jeffersonlam
352
21k
Intergalactic Javascript Robots from Outer Space
Avatar for Vicent Martí tanoku
273
27k
Imperfection Machines: The Place of Print at Facebook
Avatar for Scott Boms scottboms
269
13k
Sharpening the Axe: The Primacy of Toolmaking
Avatar for Bryan Cantrill bcantrill
45
2.5k
Java REST API Framework Comparison - PWX 2021
Avatar for Matt Raible mraible
33
8.9k
Code Review Best Practice
Avatar for Trisha Gee trishagee
72
19k
Done Done
Avatar for chrislema chrislema
185
16k

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