Clojure in General #TechLunch

2012/01/18(水) @ Livesense TechLunch
発表者：佐藤 洋輔

Transcript

1. Clojure in General Stairway to a L!p hacker
2. Table of Contents 1ɾClojureͱ͸
   2ɾ͢΂ͯ͸ γʔέϯεͰ͋Δ
   3ɾίʔυͱσʔλ
   4ɾकഁ཭
3. 1ɾClojureͱ͸
4. ؔ਺ܕݴޠ ; => ·ͨྲྀߦΓ΋ͷͰ͢
   Lispํݴ ; => ׅހύϥμΠε(^o^) Rich Hickey ; => ಡΈํ͕ɻɻɻ
   2007೥σϏϡʔ ; => nil ཧ૝ΑΓ΋࣮༻ੑॏࢹ ; => Haskell
5. ༷ʑͳݴޠ࣮૷ JVMݴޠͱͯ͠༗໊͕ͩɺ࣮૷ඇґଘ
   Clojure ; => JVM࣮૷
   ClojureCLR ; => .Net࣮૷
   ClojureScript ; => JavaScript࣮૷
6. ༷ʑͳϑϨʔϜϫʔΫ Noir ; => WebΞϓϦέʔγϣϯϑϨʔϜϫʔΫ
   Korma ; => RDBMSʢ౰વO/RͰͳ͍ʣ
   SeeSaw ; => Swing Cascalog ; => Hadoop 2007೥ʹͰ͖ͨݴޠͱ͸ࢥ͑ͳ͍ॆ࣮ͿΓ
7. LispͷྗΛࣦΘͳ͍
   ݶΓʹ͓͍ͯ
   ग़དྷΔ͚ͩLispΒ͘͠ͳ͘ car, cdr ; => ͕͢͞ʹաڈϋʔυґଘ͸ɻɻɻ
   ׅހলུ ; => ΄Μͷͪΐͬͱ(^_^;) ۭϦετධՁ ; => Clojureͷํ͕ݫີ
8. 2ɾ͢΂ͯ͸
   γʔέϯεͰ͋Δ
9. ͢΂͕ͯϦετͷLispͱҧ͍ɺClojure ͷ͢΂ͯ͸γʔέϯε
   γʔέϯε͸΄ͱΜͲͷू߹ܕΛந৅ Խͨ͠΋ͷ
   first, rest, consΛ࣮૷
10. LispͷϦετ͸ίϯεηϧ͕ͩɺ ClojureͷϦετ͸࣮૷ඇґଘ
    ( peek '(1 2 3)) ; => 1 ( peek [1 2 3]) ; => 3
11. Ͳͷ͘Β͍͢΂͔ͯ
12. ͢΂͕ͯ࿈૝഑ྻͳ JavaScript͞Μͷ৔߹
13. ͢΂͕ͯγʔέϯεͳ
    Clojure͞Μͷ৔߹
14. ; => ͜ͷਗ਼ʑ͍͠·Ͱͷ
    ͢΂ͯͬ΀Γ͕
    Կͷ໾ʹཱͭͷ͔ɻɻɻ
15. 3ɾίʔυͱσʔλ
16. ؔ਺ɺϚΫϩɺಛघܗࣜɺԋࢉࢠɺ஋
    ͦͷ͢΂͕ͯ΄ͱΜͲಉ͡Α͏ʹѻ͑ Δ
    μοΫλΠϓͷڀۃܥ
    ίʔυͱσʔλͷڥք͢Βᐆດ
17. 4ɾकഁ཭
18. ClojureʢLispʣͷจ๏͸Clean Code తʹ͍͏ͱNGͳॻ͖ํΛॿ௕͍ͯ͠Δ
    ௕͍Ҿ਺Ϧετ
    Ҿ਺ͷॱংʹΑΔڧ͍ҙຯ෇͚
19. ; => جຊΛकΔ͚ͩͰ͸
    ಘΒΕͳ͍ྗ͕
    ͋Δͱ͍͏͜ͱ
20. ߏจ͕؆ૉͳͨΊϝλϓϩάϥϛϯά͕ ༰қ
    ԋࢉࢠ͸໪࿦ɺ΄΅ͳΜͰ΋࠶ఆ͕ٛͰ ͖Δ
    ҙຯෆ໌ʹͳΓ͗͢ͳ͍Α͏ϦʔμʔϚΫ ϩ͸ॻ׵Ͱ͖ͳ͍ʢLispͱରরతʣ
    ෳࡶͳߏจΛ౶ҥ͢ΔRubyɺ؆ܿͳߏจ Λ֦ு͢ΔLisp଒
21. ; => ݴޠͦͷ΋ͷΛ
    ഁյ͢ΔΑ͏ͳڧ͍ྗʹ͸
    େ͖ͳ੹೚͕൐͏
22. ΦϒδΣΫτࢦ޲ݴޠ͸ɺෳࡶ͗͢ΔߏจΛε Ϛʔτʹݟ͔͚ͤΔͨΊͷ࣮૷ʹखؒΛऔΒΕ ա͍͗ͯΔ
    ͦͯͦ͠ͷ࣮૷ʹΑΓ·ͨҰ૚ίʔυͷෳࡶ͞ ͕૿͍ͯ͠Δ
    ݱࡏ͸CIπʔϧͳͲͰͦͷෳࡶ͔͞Βੜ·ΕΔ ϛεΛٵऩ͢Δํ޲ʹಈ͍͍ͯΔ
    Ͱ΋ͦͷπΪϋΪ͞͸ɺ͔ͭͯίʔυͷγϯϓ ϧ͞ΛઃఆϑΝΠϧͰ୲อ͍ͯͨ࣌͠୅Λኲኵ ͱͤ͞Δ
23. ; => ͦΖͦΖॅΈ׳Εͨ
    ৔ॴ͔Β཭ΕΔͷʹ
    ͍͍࣌ظ͔΋͠Εͳ͍
24. ͓·͚: ຤ඌݺग़࠷దԽ ؔ਺຤ඌͰͷؔ਺ݺग़͸ɺݺग़ݩͷϦιʔεΛ DEALLOCATE͢Δ͜ͱͰ࠷దԽͰ͖Δ
    JVM͕ະରԠ
    Scala͸ಠࣗʹ຤ඌ࠶ؼ࠷దԽʢTCOʣΛ࣮૷
    Clojure͸recur...loopಛघܗࣜΛ༻ҙ
25. ͳͥClojure͸ࣗಈͰ
    TCO͠ͳ͍͔ ؤுͬͯ΋຤ඌ“࠶ؼ”࠷దԽ͔͠Ͱ͖ͳ͍͔Β
    ໌ࣔతͳߏจΛ༻ҙ͢Δ͜ͱͰ࠷దԽνΣοΫ Ͱ͖Δ͔ΒʢScala΋2.8͔ΒΞϊςʔγϣϯͰ ޙଓʣ
    ࠶ؼઌΛؔ਺಺ͰॊೈʹઃఆͰ͖Δ͔Βʢ࠶ؼ ͷ୯Ґ͕খ͍͞৔߹ɺผؔ਺ఆٛ͸μϧ͍ʣ
26. ࣍ճ༧ࠂ
27. Git "#$buted Version Control Sy#em
28. Ͱ΋ͦͷޙ͸
    ClojureScript ClojureϑϨʔϜϫʔΫ
    ʹ໭Δ༧ఆ
29. Bye!!!