オブジェクト指向設計実践ガイドこれだけは実践しとこうガイド

発表資料 @ Rails Developers Meetup 2018 Day 3 Extreme

https://techplay.jp/event/679666

ご意見、ご感想、議論は https://twitter.com/taiki__t までお願いします！

Transcript

1. ΦϒδΣΫτࢦ޲ઃܭ࣮ફΨΠυ

   ͜Ε͚ͩ͸࣮ફ͠ͱ͜͏ΨΠυ
   by @taiki_ _t 

   ԙ: Rails Developers Meetup 2018-7-14
   

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2. ͰɺͩΕʁ
   

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3. 
   ଞ໊
   

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4. ༁ऀͰ͢
   5XJUUFS!UBJLJ@@U
   Α͔ͬͨΒ

   ώϣϩʔ͓ͳ͠Ό͢ʂ
   ੢೔฻ཬSC 

   (SBQI2-5PLZP

   ओ࠵
   

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5. ࠷ۙͷ׆ಈ
   ΞϓϦ࡞ͬͯ·͢
   3FBDU/BUJWF

   3BJMT

   (SBQI2-
   

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6. ϩʔΧϧ൪૊ɾ$.ͷΑ͏ͳ
   ৘ใڞ༗खஈΛશһͷखʹɻ
   ୭΋͕ۙ͘ͷਓʹ৘ใΛ఻͑ΒΕΔɺ୭΋͕ۙ͘ͷ৘ใΛಘΒΕΔɻ
   ͜Ε·Ͱࢿຊ͕ͳ͚Ε͹Ͱ͖ͳ͔ͬͨ৘ใ֦ࢄखஈΛશһͷखʹղ์ɻ
   $PODFQU
   ΞϓϦ঺հ
   

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7. ौ୩۠ஸ໨LNݍ಺
   ✅౤ߘʹ͸Ґஔ৘ใ͕ࣗಈͰͭ͘
   ✅Ӿཡ͢Δਓ͸ډ৔ॴºൣғͰ౤ߘΛߜΕΔ
   ౤ߘ͢Δ͚ͩͰۙ͘ͷਓʹڭ͑ΒΕΔ

   ։͚ͩ͘Ͱͦͷ৔ͷ৘ใ͕ΈΕΔ
   1SPEVDU
   ✅ࣸਅΛࡱͬͯ౤ߘ
   ΞϓϦ঺հ
   

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8. ·͋৭ʑ
   ೉͍͠
   

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9. ײ૝ͩ͋͘͠ʢJ04ʣ
   

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10. ࣮ફͱ͸
    

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11. ࠷খݶͷίετͰ
    ࠷େݶมߋʹڧ͍ίʔυΛॻ͘
    ݶΒΕͨ࣌ؒͱ

    Ϧιʔεͷத
    લఏ
    ໨ඪ
    

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12. lࠓ೔ʹͰ΋ձ͕ࣾ౗࢈ͯ͠͠·͏ͱ͍͏ঢ়گͰ͋Ε
    ͹ɺཌ೔ʹɺͦͷίʔυʹͲΕ͚ͩͷίετ͕͔͔
    Δ͔Λؾʹ͍ͯ͠Δ৔߹Ͱ͸͋Γ·ͤΜɻ༩͑ΒΕ
    ͨ࣌ؒͰ࠷ળΛਚ͔͘͢͠ͳ͍ͷͰ͢ɻz
    ൈਮ

    ΦϒδΣΫτࢦ޲ઃܭ࣮ફΨΠυʙ3VCZͰΘ͔ΔਐԽ͚ͭͮ͠ΔॊೈͳΞϓϦέʔγϣϯͷҭͯํ

    4BOEJ.FU[ɺ∁ࢁହج
    

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13. lઃܭʹ൒݄͔͔ΓɺརӹΛੜΈग़͢Α͏ʹͳΔ·Ͱ
    ʹ೥͔͔ΔΑ͏Ͱ͋Ε͹ɺ͓ͦΒͦ͘ͷઃܭʹ͸ݟ
    ߹͏΄ͲͷՁ஋͸͋Γ·ͤΜɻz
    ൈਮ

    ΦϒδΣΫτࢦ޲ઃܭ࣮ફΨΠυʙ3VCZͰΘ͔ΔਐԽ͚ͭͮ͠ΔॊೈͳΞϓϦέʔγϣϯͷҭͯํ

    4BOEJ.FU[ɺ∁ࢁହج
    

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14. ݱ࣮
    

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15. ✔ݶΒΕͨ࣌ؒ
    ✔ݶΒΕͨϦιʔε
    ✔มԽ͢Δཁٻ
    ✔༧ଌͰ͖ͳ͍ະདྷ
    

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16. ͷதͰ
    

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17. lݱ࣌఺ɺͦͯ͠ະདྷʹ͓͍ͯ΋ɺҰ؏ͯ͠අ༻ରޮՌ
    ͷ༏Εͨߏ੒Λߟ͑Δඞཁ͕͋Γ·͢ɻz
    ൈਮ

    ΦϒδΣΫτࢦ޲ઃܭ࣮ફΨΠυʙ3VCZͰΘ͔ΔਐԽ͚ͭͮ͠ΔॊೈͳΞϓϦέʔγϣϯͷҭͯํ

    4BOEJ.FU[ɺ∁ࢁହج
    

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18. ੜ͖ൈ͘ʜ
    

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19. ઃܭ
    

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20. l࣮༻తͳઃܭͱ͸ɺະདྷΛਪଌ͢Δ΋ͷͰ͸ͳ͘ɺ
    ະདྷΛड͚ೖΕΔͨΊͷબ୒ࢶΛอޢ͢Δ΋ͷͳͷ
    Ͱ͢ɻz
    ൈਮ

    ΦϒδΣΫτࢦ޲ઃܭ࣮ફΨΠυʙ3VCZͰΘ͔ΔਐԽ͚ͭͮ͠ΔॊೈͳΞϓϦέʔγϣϯͷҭͯํ

    4BOEJ.FU[ɺ∁ࢁହج
    

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21. ࠷খݶͷ
    ίετͰ
    ࠷େݶม
    ߋʹڧ͍
    

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22. ͦ͜Ͱ
    

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23. 536&ݪଇ
    ΦϒδΣΫτࢦ޲ઃܭ࣮ફΨΠυ

    ͜Ε͚ͩ͸࣮ફ͠ͱ͜͏ΨΠυᶃ
    

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24. ݟ௨͕͠ྑ͍ʢ5SBOTQBSFOUʣɿ
    มߋ͢Δίʔυʹ͓͍ͯ΋ɺͦͷίʔυʹґଘ͢Δ
    ผͷ৔ॴͷίʔυʹ͓͍ͯ΋ɺมߋ͕΋ͨΒ͢Өڹ
    ͕໌നͰ͋Δ
    ར༻ੑ͕ߴ͍ʢ6TBCMFʣɿ
    ͲΜͳมߋͰ͋ͬͯ΋ɺ͔͔Δίετ͸มߋ͕΋ͨ
    Β͢རӹʹ;͞Θ͍͠
    ߹ཧతʢ3FBTPOBCMFʣɿ
    ৽͍͠؀ڥɺ༧ظ͍ͯ͠ͳ͔ͬͨ؀ڥͰ΋࠶ར༻Ͱ
    ͖Δ
    ໛ൣతʢ&YFNQMBSZʣɿ
    ίʔυʹมߋΛՃ͑Δਓ͕ɺ্هͷ඼࣭Λࣗવͱอ
    ͭΑ͏ͳίʔυʹͳ͍ͬͯΔ
    ൈਮ

    ΦϒδΣΫτࢦ޲ઃܭ࣮ફΨΠυʙ3VCZͰΘ͔ΔਐԽ͚ͭͮ͠ΔॊೈͳΞϓϦέʔγϣϯͷҭͯํ

    4BOEJ.FU[ɺ∁ࢁହج
    

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25. ݟ௨͕͠ྑ͘ɺ߹ཧతͰɺར༻ੑ͕ߴ͘ɺ໛ൣత
    ʢͦΕͧΕͷӳ୯ޠͷ಄จࣈΛͱͬͯ536&ʣͳίʔ
    υ͸͍·ݱࡏͷχʔζΛຬ͚ͨͩ͢Ͱ͸ͳ͘ɺকདྷ
    తͳχʔζΛຬͨ͢Α͏ʹมߋΛՃ͑Δ͜ͱ΋Ͱ͖
    ·͢ɻ
    ൈਮ

    ΦϒδΣΫτࢦ޲ઃܭ࣮ફΨΠυʙ3VCZͰΘ͔ΔਐԽ͚ͭͮ͠ΔॊೈͳΞϓϦέʔγϣϯͷҭͯํ

    4BOEJ.FU[ɺ∁ࢁହج
    

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26. ൈਮ

    ΦϒδΣΫτࢦ޲ઃܭ࣮ફΨΠυʙ3VCZͰΘ͔ΔਐԽ͚ͭͮ͠ΔॊೈͳΞϓϦέʔγϣϯͷҭͯํ

    4BOEJ.FU[ɺ∁ࢁହج
    536&ͳίʔυΛॻͨ͘Ίͷ࠷ॳͷҰา
    ͸ɺͦΕͧΕͷΫϥε͕ɺ໌֬ʹఆٛ͞
    Εͨ୯Ұͷ੹೚Λ࣋ͭΑ͏పఈ͢Δ͜ͱ
    Ͱ͢ɻ
    

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27. ୯Ұ੹೚
    ΦϒδΣΫτࢦ޲ઃܭ࣮ફΨΠυ

    ͜Ε͚ͩ͸࣮ફ͠ͱ͜͏ΨΠυᶄ
    536&ͳίʔυͷͨΊʹ
    

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28. Ϋϥε΋
    

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29. ϝιου΋
    

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30. ୯Ұ੹೚Λ
    ৺͕͚Α͏
    

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31. Ͱ΋Ͱ͖ͳ͍ͱ͖͋Δ
    ΑͶ
    

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32. ίϝϯτ
    ΦϒδΣΫτࢦ޲ઃܭ࣮ફΨΠυ

    ͜Ε͚ͩ͸࣮ફ͠ͱ͜͏ΨΠυᶅ
    

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33. 536&ݪଇ͔Β

    ཭ΕΔ࣌͸

    ίϝϯτͰิ͏
    

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34. ݟ௨͕͠ྑ͘ͳ͍ʢ҉໧ͷ஌͕ࣝ͋Δʣͱ͖
    ͦΕΛॻ͘
    ֎෦ίϯϙʔωϯτͷಈ͖ͱ͔
    https://github.com/facebook/react-native/blob/
    e9e20e6c8335f27af8469cd23cb7ba079b0422f9/local-cli/generator/templates.js#L49
    

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35. ߹ཧత͡Όͳ͍ͱ͖
    ྫӡ༻ͨ͠Βരൃ͢Δ͡Ό
    ΜɺΈ͍ͨͳίʔυͳͲ
    ྫԠٸॲஔ
    

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36. ར༻ੑ͕௿͍ͱ͖
    ࠶ར༻ੑ͕௿ͯ͘ྑ͍ཧ༝Λॻ͘ɻ
    ྫݕূ͕ऴΘͬͨΒ͙͢ফ͢ίʔυ
    

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37. ໛ൣత͡Όͳ͍ͱ͖ɿ
    ਅࣅ͠ͳ͍ͰͶɺͱཧ૝͸Ͳ͏͔Λ
    ॻ͘ɻ
    ༁͜͜ʹ͜ͷίʔυ͕͋Δͷ͸͋ΔछͷϋοΫɻ50%0ΠϯλʔϑΣʔεʹ
    ௚઀௥Ճ͢Δ
    IUUQTHJUIVCDPNGBDFCPPLSFBDUOBUJWFCMPCFGCGFBCGDEEDCD
    3FBDU"OESPJETSDNBJOKBWBDPNGBDFCPPLSFBDUCSJEHFCSJEHFQSP
    

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38. ৗʹ536&
    Λҙࣝ͢Δ
    

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39. ૯ྗઓͰ

    มߋʹڧ͍ίʔυ
    Λ࡞͍ͬͯ͜͏
    

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40. 536&ݪଇ
    ΦϒδΣΫτࢦ޲ઃܭ࣮ફΨΠυ

    ͜Ε͚ͩ͸࣮ફ͠ͱ͜͏ΨΠυ·ͱΊ
    ୯Ұ੹೚
    ৗʹҙࣝ
    ৺͕͚
    Ͱ͖ͳ͍ͱ͖͸
    

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41. ൪֎ฤ
    ΄͔ͷ෢ث
    

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42. ίϐϖ
    ίϐϖ͸࣌ʹڧྗͳ෢ثͩ
    

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43. ίϐϖͰ͖ͳ͍΄Ͳ

    ௕͍ίʔυ
    ෳࡶͳίʔυ͸ॻ͔ͳ͍
    ίϝϯτ͸ઈର͠Α͏
    ͍͍ͤͥճ໨͙Β͍·Ͱɻճ໨
    Ҏ߱͸ந৅Խ΍੾Γ෼͚Λ͠Α͏
    

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44. ༧ݴ͠ͳ͍
    

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45. lϓϩάϥϚʔ͸௒ೳྗऀͰ͸ͳ͍ͷͰɺಛఆͷະདྷ
    Λ༧ଌͨ͠ઃܭ͸ɺ͍͍ࣦͨͯഊʹऴΘΓ·͢ɻz
    ൈਮ

    ΦϒδΣΫτࢦ޲ઃܭ࣮ફΨΠυʙ3VCZͰΘ͔ΔਐԽ͚ͭͮ͠ΔॊೈͳΞϓϦέʔγϣϯͷҭͯํ

    4BOEJ.FU[ɺ∁ࢁହج
    

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46. ྫɿந৅Խͯ͠

    ϙϦϞʔϑΟοΫؔ࿈

    ࡞ͬͨΓͯ͠΋
    ࢖Θͳ͔ͬͨɾ
    ࢖͑ͳ͍͜ͱ͕Θ͔ͬͨΒ
    ࢮ
    

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47. EVQMJDBUJPOJTGBSDIFBQFS
    UIBOUIFXSPOHBCTUSBDUJPO
    IUUQTXXXTBOEJNFU[DPNCMPHUIFXSPOHBCTUSBDUJPO
    

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48. QSFGFSEVQMJDBUJPOPWFSUIF
    XSPOHBCTUSBDUJPO
    IUUQTXXXTBOEJNFU[DPNCMPHUIFXSPOHBCTUSBDUJPO
    

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49. νʔϜͷ

    ߹ҙ
    

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50. ίʔυͷ߹ཧੑ͸
    ϓϩμΫτͷϑΣʔζ
    νʔϜʹΑͬͯ΋มΘΔͷͰ
    Α͘࿩ͦ͏
    

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51. ٞ࿦ͷ౔୆

    ʢڞ௨ݴޠʣ
    ͕ཉ͍͠
    

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52. ྑ͍ຊ͕͋Δ
    

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54. ?V?
    
    

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55. ͋Ε΋͍ͨ͜͠Ε΋͍ͨ͠

    ΋ͬͱ͍ͨ͠΋ͬͱ΋ͬͱ͍ͨ͠

    Š5)&#-6&)&"354ເ
    

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56. ݶΒΕͨ࣌ؒͷͳ͔Ͱ

    आΓ΋ͷͷ࣌ؒͷͳ͔Ͱ

    ຊ෺ͷເΛݟΔΜͩ

    Š5)&#-6&)&"354ເ
    

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57. ΍͍͖ͬͯ
    

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58. ΦϒδΣΫτࢦ޲ઃܭ࣮ફΨΠυ

    ͜Ε͚ͩ͸࣮ફ͠ͱ͜͏ΨΠυ
    by @taiki_ _t 

    ԙ: Rails Developers Meetup 2018-7-14
    5)"/,
    :06
    

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