Good interface: Command pattern as an example

Transcript

1. ྑ͍ΠϯλʔϑΣΠεͷ୳ٻ ίϚϯυύλʔϯΛྫʹ େ૔խ࢙ʢ@okuramasafumiʣ ໊ݹ԰Rubyձٞ04―େਢԋܳ৔ 2019-06-08ʢ౔ʣ
2. ࠓ೔ͷൃද͸࿩୊͕͋ͪͪ͜ʹ ભҠ͍͖ͯ͠·͢ɻ མޠͩͱࢥָͬͯ͠Έͳ͕Β ͓͔͚͖͍ͬͯͯͩ͘͞!
3. pp self • ໊લɿ΂͢ͱ௾·͞;Έʢେ૔խ࢙ʣ • ॴଐɿϑϦʔϥϯε • ׆ಈ৔ॴɿ౦ژ • ޷͖ͳgemɿPry, RSpec • ӡӦͯ͠ΔίϛϡχςΟɿGrow.rb
4. ໊ݹ԰Rubyձٞ
5. ໊ݹ԰Rubyձٞ
6. զʑ͸ͳͥRubyΛ࢖͏ͷ͔
7. Rubyͷ࿩
8. զʑ͸ͳͥRubyΛ࢖͏ͷ͔ • ॻ͖΍͍͢ • ʮॻ͖΍͢͞ʯͬͯͳΜͩΖ͏ • ಡΈ΍͍͢ • ʮಡΈ΍͢͞ʯͬͯ(ry • Rails
9. զʑ͕RubyΛ࢖͏ཧ༝
10. ϓϩάϥϛϯάָ͕͍͠
11. ͳͥRubyͰϓϩάϥϛϯάΛ͢Δͱ ָ͍͠ͷͩΖ͏͔ʁ
12. https://www.atmarkit.co.jp/news/ 200907/24/ruby2.html
13. yuguiɿ ͦΕ͸ɺίϨΫγϣϯ͕͋ͬͯγϟοϑϧ ͍ͨ͠ͱࢥͬͨΒɺshuffleͱॻ͍ͯɺͦΕ Ͱಈ͔ͳ͖Ό͍͚ͳ͍ΜͰ͢Αɻ
14. ࢥͬͨͱ͓Γʹಈ͘ ʢৗʹಈ͘ͱ͸ݴ͍ͬͯͳ͍ʣ
15. ͱ͜ΖͰɿ ͳΜͰ͜ͷ࿩Λ͍ͯ͠Δͷ͔
16. ָ͘͠ϓϩάϥϛϯάͰ͖Δ ྖҬΛ޿͍͛ͨʂ
17. ϥΠϒϥϦΛॻ͍ͯΈΑ͏ →ॻ͖·ͨ͠
18. https://github.com/okuramasafumi/ neco
19. 150ߦͪΐ͍ͷϥΠϒϥϦ
20. 2ճ΄Ͳॻ͖௚͍ͯ͠Δ
21. ΠϯλʔϑΣΠεʹೲಘ͕͍͔ͳ͔ͬͨ
22. ΠϯλʔϑΣΠεʹ͍ͭͯ ͍Ζ͍Ζߟ͑ͨͷͰɺ ͦͷ੒ՌʢʁʣΛڞ༗͍ͨ͠
23. ͦ΋ͦ΋ɿ ΠϯλʔϑΣΠεͬͯ ͳΜ͚ͩͬʁ
24. Interface (MacOSͷࣙॻΑΓ) 1. a point where two systems, subjects, organizations, etc. meet and interact 2. Computing a device or program enabling a user to communicate with a computer
25. ΠϯλʔϑΣΠε͸ ίϯϐϡʔλͱͷίϛϡχέʔγϣϯ ͷͱΓํΛܾఆ͢Δ΋ͷ
26. ΠϯλʔϑΣΠεʹϝιου
27. ΠϯλʔϑΣΠεʹϝιουγάχνϟ
28. ʮࢥͬͨͱ͓Γʹಈ͘ʯ
29. Ruby͸ ΠϯλʔϑΣΠεʢ㲓ϝιουγάχνϟʣ ͕ྑ͍͔Β࢖ΘΕ͍ͯΔ
30. DSL
31. ҎԼɺ ʮDSLʯ͸ʮݴޠ಺DSLʯΛࢦ͠·͢
32. Domain Specific Language
33. Ruby͕࢖ΘΕΔཧ༝ͷҰͭ
34. RubyʹΑΔDSLͷ۩ମྫ • ActiveRecordʢRailsܥʣ • RakeʢϏϧυܥʣ • RSpecʢBDDʣ • Puppet΍ChefɺVagrantʢDevOpsܥʣ • HomebrewʢύοέʔδϚωʔδϟʣ
35. ڞ௨఺
36. DSL͸Կ͔Λఆ͍ٛͯ͠Δ
37. RubyʹΑΔDSLͷ۩ମྫʢ࠶ܝʣ • ActiveRecordʢRailsܥʣ • RakeʢϏϧυܥʣ • RSpecʢBDDʣ • Puppet΍ChefɺVagrantʢDevOpsܥʣ • HomebrewʢύοέʔδϚωʔδϟʣ
38. RubyʹΑΔDSLͷ۩ମྫʢఆٛྫ෇͖ʣ • ActiveRecordʢσʔλϞσϧͷఆٛʣ • RakeʢϏϧυϓϩηεͷఆٛʣ • RSpecʢ๬·ΕΔৼΔ෣͍ͷఆٛʣ • Puppet΍ChefɺVagrantʢ֤छΠϯϑϥϦιʔεͷఆٛʣ • Homebrewʢύοέʔδͷఆٛʣ
39. ͱ͜ΖͰɿ DSL͸୯ͳΔΫϥεϝιου ʢͷ৔߹͕ଟ͍ʣ
40. ͭ·Γɿ DSL΋·ͨΠϯλʔϑΣΠε
41. ͜͜·Ͱͷ·ͱΊ • ΠϯλʔϑΣΠε͕ྑ͍ͱָ͘͠ϓϩάϥϛϯάͰ͖Δ • ΠϯλʔϑΣΠεͱ͸͍͍ͩͨϝιουγάχνϟͷ͜ͱ • ֤ॴͰ࢖ΘΕ͍ͯΔDSL΋࣮͸ͨͩͷϝιου • DSL͸ʮఆٛʯʹڧ͍ • ΠϯλʔϑΣΠε͸ʮ७ਮͳϝιουʯͱDSLʹ෼͚ΒΕΔ
42. https://rubykaigi.org/2019/ presentations/tanaka_akr.html
43. ྑ͍ΠϯλʔϑΣΠεͬͯ ͳΜͩΖ͏ʁʁʁ
44. ⚠ ͜Ε͸͢΂ͯࢲͷ୯ͳΔҰҙݟͰ͢ Ͳ͔ͬͪͱ͍͏ͱ൓࿦͕΄͍͠… ࠙਌ձͰ͓࿩͠·͠ΐ͏
45. ྑ͍ΠϯλʔϑΣΠεͷ̏ݪଇ • ໎Θͳ͍ • ґଘ͠ͳ͍ • ೚ͤ͗͢ͳ͍
46. ໎Θͳ͍ • ϝιου໊ʹࡾ୯ݱͷʮsʯ͸ඞཁ͚ͩͬʁ • ͋ͷΫϥε͸callͰݺͿΜ͚ͩͬɺperform͚ͩͬʁ • Πϯελϯεϝιου͚ͩͬɺΫϥεϝιου͚ͩͬʁ • Ҿ਺ͷॱং͸ʁ
47. ґଘ͠ͳ͍ • ϝιουνΣʔϯΛલఏͱ͠ͳ͍ʢಛఆͷฦΓ஋ʹґଘ͠ͳ ͍ʣ • ςετ࣌ͷελϒ͕ߴʑҰͭͰࡁΉ
48. ೚ͤ͗͢ͳ͍ • ΤϯυϢʔβʔ͕ࣗྗͰͰ͖Δ͜ͱ͸΍Βͳ͍ • ୯७ͳόϦσʔγϣϯʹෳࡶͳDSL͸ຊ౰ʹඞཁ͔ʁ • ΤϯυϢʔβʔ͕ࣗྗͰ΍ΓͮΒ͍͜ͱΛ΍Δ • νΣʔϯͨ͠ϩʔϧόοΫॲཧ͸ࣗྗͰ͸೉͍͠ʢޙड़ʣ
49. ௨ৗͷϝιου͔DSL͔ɺ ͦΕ͕໰୊ͩ
50. શ෦ϝιουͰ͍͍͡ΌΜɺ DSLͱ͔֮͑Δͷେมͩ͠ʂ Pure Ruby࠷ߴʂ
51. ͱࢥͬͯͨ࣌ظ͕๻ʹ΋͋Γ·ͨ͠…
52. ϝιουΠϯλʔϑΣΠεͷ௕ॴ • Ҿ਺΍selfͳͲ͕ࣗ໌ • ܧঝͨ͠ͱ͖ʹಈ࡞͕ཧղ͠΍͍͢ • ͦ͜ʹʮࠇຐज़ʯ͸ͳ͍
53. ϝιουΠϯλʔϑΣΠεͷ୹ॴ • ॊೈͳڍಈΛఏڙ͢ΔࡍʹϢʔβʔ͕ॻ͘΂͖ϝιου͕൥ࡶ ʹͳΓ͕ͪ • ϥΠϒϥϦ͕ϑϩʔΛίϯτϩʔϧ͠Α͏ͱ͢Δࡍʹඞཁͳ ϑοΫΛࠩ͠ڬΉͷ͕೉͍͠ʢϢʔβʔʹଟ਺ͷϝιουΛఆ ٛͯ͠΋Β͏ඞཁ͕ग़ͯ͘Δʣ
54. DSLͷ௕ॴ • ϒϩοΫҾ਺͸ϝιουҾ਺ΑΓॊೈ • ద੾ʹ໋໊͞Ε͍ͯΔ৔߹ɺՄಡੑ͕ߴ͍ • ϥΠϒϥϦ͕೚ҙͷॲཧΛϢʔβʔఆٛͷॲཧʹڬΈࠐΊΔ ʢϑοΫ΍ΩϟογϡͳͲʣ • ԿΛ͍ͨ͠ͷ͔ͷʮఆٛʯΛએݴతʹॻ͚Δ
55. DSLͷ୹ॴ • ʮࠇຐज़ʯ͕ଟ͘ͳΓ͕ͪͷͰɺڍಈΛਖ਼֬ʹ೺Ѳ͢Δͷ͕ࠔ ೉ • ద੾ʹ໋໊͞Ε͍ͯͳ͍৔߹ɺՄಡੑ͕ஶ͘͠མͪΔέʔε͕ ͋Δ • ϝλϓϩάϥϛϯάΛར༻͢Δ৔߹ɺσόοά͕ࠔ೉ʹͳΔ
56. ॊೈੑͷ఺ͰDSL͕༏Ґ
57. ͡Ό͋શ෦DSLΛ༻ҙ͠·͘Ε͹ ͦΕͰ͍͍ͷ͔ʂʁ
58. ࠇຐज़͡Όͳ͍ͷͦΕʁ
59. DSL͸ຐज़౓͕௿͍ ʢby Joker1007ʣ
60. ൑அ͕೉͍͠έʔε΋
61. ྫɿ όϦσʔγϣϯ͸ఆٛͳͷͰDSLΛ࢖͏ ͔͠͠ɺܕνΣοΫΛDSLͰߦ͏΂͖͔ʁ
62. ճ౴ྫɿ ೚ͤ͗͢ͳ͍ݪଇʹै͍ɺ࣮ࡍͷ όϦσʔγϣϯ͸Ϣʔβʔʹ೚ͤΔɺ ϥΠϒϥϦ͸όϦσʔγϣϯఆٛͷ ϑοΫDSLͷΈఏڙ
63. ۩ମྫ ʢࠓճͷυϝΠϯ͸ίϚϯυύλʔϯʣ
64. Neco͸ϏδωεϩδοΫΛ ʮίϚϯυʯʹ෼ׂ͠ɺ ͦΕΒΛ૊Έ߹ΘͤΔϑϩʔΛ ࢧԉ͢ΔϥΠϒϥϦ
65. ·ͱΊ • ͔ͤͬ͘RubyͰॻ͍ͯΔΜ͔ͩΒΠϯλʔϑΣΠεʹ͸ͩ͜Θ Γ͍ͨʢ࢖ָ͍ͬͯ͠ϥΠϒϥϦ͕΄͍͠ʣ • DSL͸RubyͷڧΈͰ΋͋Γɺద੾ʹ໋໊ɾ࣮૷͢Ε͹୯७ͳϝ ιουΑΓॊೈͳఆٛΠϯλʔϑΣΠεΛఏڙͰ͖Δ • ͕Μ͹ͬͯॊೈͳ࢖͍উखΛ໨ࢦͯ͠ΔͷͰNeco࢖ͬͯ͘ΕΑͳʢએ఻ʣ