Ruby Is Nice so We Are Nice

Keynote on RubyWorld conference 2017

Video:
📺1: https://youtu.be/NctyqVznddg
📺2: https://youtu.be/P7AunfXSOTQ

Transcript

1. RUBY IS NICE SO WE ARE NICE ֯୩৴ଠ࿠ !LBLVUBOJ 
 3VCZ8PSME
   $POGFSFODF
   
   جௐߨԋ
2. .BU[
   JT
   OJDF
   TP
   XF
   BSF
   OJDF
3. XF3VCZJTUɻ3VCZJTU ͱ͸ɺl3VCZʹରͯ͠ ୯ͳΔ͓٬͞ΜҎ্ͷ ؾ࣋Λ͍࣋ͬͯΔਓz
4. ࣗ෼Ҏ֎Ͱ3VCZΛ࢖͍ͬͯΔ ਓͷ͜ͱ͕ؾʹͳͬͯߦಈͯ͠ ͍Δ͋ͳͨ͸͔ͳΓ3VCZJTUͷ ૉཆ͕͋Γ·͢ɻ͍·ͷٕज़Ϩ ϕϧ΍஌ࣝ͸ؔ܎ͳ͍ΜͰ͢ɻ
5. Α͏ͦ͜
6. .BU[
   JT
   OJDF
   TP
   XF
   BSF
   OJDF
7. 3VCZ
   JT
   OJDF
   TP
   XF
   BSF
   OJDF
9. .BU[͕φΠεͳͷ͸Θ͔ Δ .BU[ౕ͍͍ ɻ͔͠͠ 3VCZ͕φΠεͱ͸ʜ
   ࡢ ೔ͷجௐߨԋΛώϯτʹ ߟ͑ͯΈ·͠ΐ͏ʜ
10. l3VCZz͸ϓϩάϥϛϯάݴޠͩ ͚ʹݶΒͳ͍ɻϥΠϒϥϦ΍ϑ ϨʔϜϫʔΫɺπʔϧ΍ΞϓϦ έʔγϣϯʜΈΜͳͷ࣋ͪدͬ ͨl࢖͏ਓʹͱͬͯͷྑ͍ײ͡z ͷશମɺͦΕ͕3VCZͷφΠεɻ
11. ΈΜͳ͕3VCZʹ࣋ͪدͬͨ੒Ռ͕φ Πε͔ͩΒࢲͨͪ3VCZJTU΋φΠεͰ ͍Α͏ʜ͋Ε
    ੒ՌΛ࣋ͪد͍ͬͯ Δͷ͸3VCZJTUͰ͸
    3VCZJTUͷ੒Ռ ͕φΠε͔ͩΒ3VCZJTU͸φΠε
    3VCZJTU͕φΠε͔ͩΒ3VCZ͕φΠ εʹͳΔ
    ແݶϧʔϓ͔ͳ
12. 3VCZͷφΠε͞͸ɺ3VCZJTU ͷ࣋ͪدͬͨl͍͍ײ͡zͷશ ମͱͯ͠ɺ3VCZJTU͕ҭ͍ͯͯ ͘ɺͱ͍͏ಈతͰࣗݾݴٴత ͳऴΘΓͷఆ·Βͳ͍׆ಈʹɻ
13. 3VCZ,BJHJ
    ͷ.BU[ͷ جௐߨԋ͸l.BU[
    JT
    OJDFz͔ Βl3VCZ
    JT
    OJDFz΁ͱ͍͏ ͷ͕࣮ࡍʹ͸ͲΜͳ෩ܠͳͷ ͔Λ঺հͯ͘͠Ε͍ͯ·͢ɻ
14. ʜͱ͸͍͑ɺͦΕ͸͜ͷ࿭੕Ͱ ࠷ڧΫϥεͷ΢σϚΤͷεΰΠ ڃϋοΧʔͷ࿩͡ΌΜͶʜͱ͍ ͏ؾ࣋ͪ͸Θ͔Δɻ3VCZJTUʹ ٕज़ͷϨϕϧ͸ؔ܎ͳ͍ɺͱ͍ͬ ͯ΋ٕज़ͷ෼໺ͷ࿩ͩ͠Ͷʜɻ
15. 3VCZ
    JT
    OJDF
    TP
    XF
    BSF
    OJDF
16. ೥Ҏ߱ ͜ͷ೥ؒ ʹɺ 3VCZΛۀ຿Ͱ࢖͍࢝Ίͨɺlී ௨ͷzϓϩάϥϚʔͷΈͳ͞Μ ʹ΍ͬͯ΋Β͑Δͱ͍͍Μ͡Ό ͳ͍͔ͳͱࢥ͍ͬͯΔ͜ͱ
17. ೔தʹɺ͓ޓ͍ʹܟҙΛ ΋ͬͯ཰௚ʹɺ࢓ࣄʹؔ Θ͍ͬͯΔlؾ࣋ͪzΛ࿩ ͢ػձΛܧଓతʹ࣋ͱ͏
18. lඇެࣜzͰ͍͍ɻ΍Γํ΋ͲͷΑ͏ͳ ΋ͷͰ΋ߏΘͳ͍ɻ·ͣ͸෼͔Β Ͱ΋ɻl;Γ͔͑ΓzɺPOɺࡶஊɺ ໘ஊɺϥϯνʜɻϓϩάϥϚʔಉ࢜Ͱ ࢝Ίͯ΋͍͍͠ɺ ࣗ෼ͨͪͰखԠ͑ Λײͨ͡Γɺඞཁͦ͏ͳΒ ϓϩάϥ ϚʔͰดͣ͡ʹ΍ΕͨΒ͍͍͘͢͝ɻ
19. 3VCZ͸ίϯϐϡʔλʔʹ࢓ࣄ Λͤ͞ΔͨΊͷϓϩάϥϛϯά ݴޠͰ͋Δͱಉ࣌ʹɺϓϩάϥ Ϛʔʹϓϩάϥϛϯά͕lͨͷ ͍͠zͱ͍͏ؾ࣋ͪΛ఻͑Δ
    lݴ ޠzͰ΋͋Δ ͍͢͝
20. ૹΓख͕ײ͍ͯ͡Δؾ࣋ ͪΛड͚खͷ৺ʹ࠶ݱ͞ ͤΔͨΊͷݴޠͷ࢖͍ํ ͸lࢻzͱݺ΂ΔͷͰ͸ 
 ϙΤϜ
21. 3VCZ͕ϓϩάϥϛϯάݴޠΛ ϝσΟΞͱͯ͠ײ৘Λಧ͚͍ͯ ΔΑ͏ʹɺl࢓ࣄzΛϝσΟΞͱ ͯ͠ײ৘Λಧ͚ΒΕ͍ͯΔ͔ 
 ϙΤϜͱͯ͠ͷ࢓ࣄ
22. Ͱ͖͍ͯΔͰ͖͍ͯ ͳ͍ɺڧ͍ऑ͍ɺࣗ ৴͕͋Δෆ҆ͩɺ೰Μ Ͱ͍Δ΋΍΋΍͢Δ
23. 3VCZΛ࢖ͬͯۀ຿΍ࣄۀΛ͓͜ ͳ͏ػձ͸ͱͯ΋ͱͯ΋૿͑·͠ ͨ Α͍͜ͱ ɻ͔͠͠ɺ3VCZͷ Α͏ʹφΠεͳײ৘Λ࢓ࣄΛ௨͡ ͯಧ͚͍ͯΔ৬৔͸ಉ͚ͩ͡͸૿ ͑ͯ͸͍ͳ͍ɺͱײ͍ͯ͡Δɻ
24. ͩͬͯ·͋೉͍͠ ͔ΒͶ
25. 3VCZ͸ίϯϐϡʔςΟϯάύϫʔ ͷ૿େͱΠϯλʔωοτͷීٴ ͷաఔͰੜ·Εҭͬͨɺࣗ༝ͳɺ ࣗવͷɺ໺ੜͷιϑτ΢ΣΞ
 3VCZ͸ϋοΧʔୡ͕ͭͬͨ͘
26. lϏδωεzͱͯ͠ͷιϑτ ΢ΣΞͮ͘Γ͸Ͳ͏ͯ͠΋ ਓ޻తͳ؀ڥʹͳΓ͕ͪɻ ๻ΒϋοΧʔ͡Όͳ͍͠ʜ ળѱͷ໰୊Ͱ͸ͳ͍ ɻ
27. ໺ੜͷιϑτ΢ΣΞͰ͋ Δ3VCZͷφΠε͞Λਓ޻ తͳ؀ڥͰ͋ΔϏδωε ͷੈքͰϋοΧʔͳΒ͵ զʑ͕l࠶ݱz͢Δํ๏
28. ͦ͜ͰΞδϟΠϧ ϦʔϯͰ͢Α
29. “ ” ϋοΧʔͱΞδϟΠϧ  "What!?! That's obvious!" closely followed by "But Fowler explains it better than Unix traditions do..." ,$#)   
    
    *%'+ )BDLJOH
    BOE
    3FGBDUPSJOH
    CZ
    &SJD
    4
    3BZNPOE
    IUUQXXXBSUJNBDPNXFCMPHTWJFXQPTUKTQ UISFBE
30. The New Methodology
 ৽͍͠ํ๏࿦ • Adaptive > Predictive ࣄલͷਫ਼౓ΑΓ΋ݱ࣮΁ͷదԠΛ • People > Process “ਓؒ”͸ιϑτ΢ΣΞ։ൃͷ࠷ॏཁίϯϙʔωϯτ • Self-Adaptive Process ϓϩηε͸ϑΟʔυόοΫΛ௨ͯ͡ҭͭ https://www.martinfowler.com/articles/newMethodology.html
31. ྫ͑͹4DSVNͱ͍͏ΞδϟΠ ϧͳ࢓ࣄͷਐΊํͷϑϨʔϜϫʔ Ϋ͕͋Δɻ͜ΕΛφΠεΛಧ͚ ΔϝσΟΞͱͯ͠ϙΤϜԽ͢Δ
 ಁ໌ੑ
    ݕࠪ
    దԠ
32. ྫ͑͹-&"/ΤϯλʔϓϥΠζͱ͍͏૖ େͳߏ૝͕͋ΔɻlϛογϣϯίϚϯυz ͱlվળͷܕzΛφΠεΛಧ͚ΔϝσΟ Ξͱͯ͠ϙΤϜԽ͢Δ
 λʔήοτঢ়ଶɺ໨తɺ࠷খݶͷ੍໿
33. 3VCZΛ࢖ͬͯlͨͷ͍͠zͱײ ͡ΒΕͨͱ͖ͷड͚खͱͯ͠ͷ ؾ࣋ͪΛɺࣗ෼͕࢓ࣄͷૹΓख ͱͳͬͨͱ͖ʹɺͦΕΛड͚ख ͷ৺ʹl࠶ݱz͢Δ͜ͱʹ͚ۙͮ ͍ͯΔͩΖ͏͔
34. 3VCZͷφΠεΛಧ͚Δ ϝσΟΞͱͯ͠ϙΤϜԽ ͢Δͱ͍͏؍఺͔Βઌୡ ͷݴ༿ΛோΊͯΈΑ͏
35. lࣃंͷͭʹͳͬͨਓؒ͸ɺ ࢓ࣄΛָ͘͠Ͱ͖ͳ͍ɻ࢓ࣄ ָ͕͘͠ͳΔͷ͸ɺ࢓ࣄͷશ ମ૾͕೺ѲͰ͖ɺ࢓ࣄશମͷ ࣭ʹ੹೚Λ࣋ͭ৔߹Ͱ͋Δɻ ΫϦετϑΝʔɾΞϨάβϯμʔʰύλϯɾϥϯήʔδʱ
36. lʮָ͠͞ʯʹ΋ϏδωεՁ ஋͕͋Γ·͢ŠŠ݁ہɺϞν ϕʔγϣϯ͕ͦ͜ϓϩάϥϚ ͷੜ࢈ੑΛࠨӈ͢ΔͷͰ͢ɻ ϚʔςΟϯɾϑΝ΢ϥʔʮμΠφϛοΫλΠϐϯάʯ http://bliki-ja.github.io/DynamicTyping/
37. http://modernagile.org/
38. !LBLVUBOJ
40. 3VCZJTUJTUɻ 3VCZJTU͕޷͖ɻ
41. Ұൠࣾஂ๏ਓ೔ຊ3VCZͷձͷཧࣄɻ ૲ͷࠜͷ೔ຊͷ3VCZJTUͷ׆ಈʹ๏ਓ ֨Λ༩͍͑ͯΔɻ3VCZϦϑΝϨϯε ϚχϡΞϧ
    3VCZJTU
    .BHB[JOF
    3VCZ,BJHJ
    ஍Ҭ3VCZձٞ
    3BJMT(JSMT
    +BQBOͳͲͷ׆ಈΛࢧԉ ͢ΔࣄۀΛ͓͜ͳ͍ͬͯ·͢ɻ
42. 3VCZΞιγΤʔγϣϯ͸Ұൠ ࡒஂ๏ਓɻࡒʹ๏ਓ֨Λ༩͑ͯɺ ͓ۚʹ͍͍ײ͡ʹಇ͍ͯ΋Βͬ ͯ3VCZͷීٴͱൃలͷͨΊͷ ࣄۀΛ΍͍ͬͯͯ͢͝
 ݸਓͷݟղͰ͢ ɻ
44. 3VCZͷφΠε͞͸ɺ3VCZJTU ͷ࣋ͪدͬͨl͍͍ײ͡zͷશ ମͱͯ͠ɺ3VCZJTU͕ҭ͍ͯͯ ͘ɺͱ͍͏ಈతͰࣗݾݴٴత ͳऴΘΓͷఆ·Βͳ͍׆ಈʹɻ
45. 3VCZ͕ϓϩάϥϛϯάݴޠΛ ϝσΟΞͱͯ͠ײ৘Λಧ͚͍ͯ ΔΑ͏ʹɺl࢓ࣄzΛϝσΟΞͱ ͯ͠ײ৘Λಧ͚ΒΕ͍ͯΔ͔ 
 ϙΤϜͱͯ͠ͷ࢓ࣄ
46. ೔தʹɺ͓ޓ͍ʹܟҙΛ ΋ͬͯ཰௚ʹɺ࢓ࣄʹؔ Θ͍ͬͯΔlؾ࣋ͪzΛ࿩ ͢ػձΛܧଓతʹ࣋ͱ͏
47. ͍·ɺͰ͖ΔΞδϟΠϧ
    ֯੐య 
    https://www.slideshare.net/kdmsnr/20130808agilesapporo Further Reading https://www.slideshare.net/takahashim/how-to-become-a-rubyist 3VCZJTUೖ໳
    ೥൛
    ߴڮ੐ٛ 
    http://rubyonrails.org/doctrine/ 5IF
    3BJMT
    %PDUSJOF
    %)) 
    
48. RUBY IS NICE SO WE ARE NICE ֯୩৴ଠ࿠ !LBLVUBOJ 
 3VCZ8PSME
    $POGFSFODF
    
    جௐߨԋ