抽象化って何？ (What is abstraction?)

2019年2月16日 Laravel JP Conference

Transcript

1. ந৅ԽͬͯԿʁ
   ޙ౻लએ
   IJEFOPSJHPUP!HNBJMDPN
   
   -BSBWFM+1$POGFSFODF
   8IBUJTBCTUSBDUJPO
   

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2. ந৅Խ
   "CTUSBDUJPO
   

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3. ͜ͷτʔΫͷ໨ඪ
   

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4. ͜ͷτʔΫͷ໨ඪ
   w ݱ࣮ੈքʹ͓͚Δந৅Խͱ͸ͲͷΑ͏ͳ͜ͱͳͷ͔ɺ
   ཧղ͢Δ
   

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5. ͜ͷτʔΫͷ໨ඪ
   w ݱ࣮ੈքʹ͓͚Δந৅Խͱ͸ͲͷΑ͏ͳ͜ͱͳͷ͔ɺ
   ཧղ͢Δ
   w ϓϩάϥϛϯάʹ͓͚Δந৅Խͱ͸ͲͷΑ͏ͳ͜ͱ
   ͳͷ͔ɺཧղ͢Δ
   

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6. ͜ͷτʔΫͷ໨ඪ
   w ݱ࣮ੈքʹ͓͚Δந৅Խͱ͸ͲͷΑ͏ͳ͜ͱͳͷ͔ɺ
   ཧղ͢Δ
   w ϓϩάϥϛϯάʹ͓͚Δந৅Խͱ͸ͲͷΑ͏ͳ͜ͱ
   ͳͷ͔ɺཧղ͢Δ
   w ந৅Խͷࢦ਑Λ஌Γɺந৅Խͷྑ͠ѱ͠Λ൑அͰ͖
   ΔΑ͏ʹͳΔ
   

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7. ͓୊આ໌
   

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8. γνϡΤʔγϣϯ
   w ʮ਺ಠʢφϯϓϨɺ/VNCFS1MBDFʣʯͷΞϓϦΛ։
   ൃ͢Δ
   

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9. ਺ಠʢφϯϓϨʣͱ͸ʁ
   

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10. ਺ಠʢφϯϓϨʣͱ͸ʁ
    ݸͷϚεʹ͓͍ͯɺ
    ̍ʙ̕ͷ਺ࣈ͕
    ॏෳ͍ͯ͠ͳ͍͜ͱ
    

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11. γνϡΤʔγϣϯ
    w ʮ਺ಠʢφϯϓϨɺ/VNCFS1MBDFʣʯͷΞϓϦΛ։ൃ
    ͢Δ
    w ਺ಠͷʮਖ਼ղνΣοΫػೳʯͷ࣮૷Λ୲౰͢Δ
    w ϧʔϧΛຬ͍ͨͯ͠Δ͔Ͳ͏͔ʁ
    w લఏ
    w ਺ಠͷ͢΂ͯͷϚεʹ਺ࣈ͕ೖ͍ͬͯΔ
    w ̍ʙ̕ͷ਺ࣈҎ֎ͷೖྗ͸ͳ͍
    

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12. ࠷ॳͷίʔυ֓ཁ
    ਺ಠͷϚεͷ৘ใΛ
    ̎࣍ݩ഑ྻͰอ࣋
    ਖ਼ղ͔Ͳ͏͔Λ
    νΣοΫ͢Δ
    

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15. B<J><K>
    Jଆ͕ߦ
    Kଆ͕ྻ
    

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18. վળϙΠϯτ͸ͳ͍͔ʁ
    w ϩδοΫ͸Ͱ͖͍ͯΔɻਖ਼͘͠νΣοΫͰ͖Δɻ
    w ίʔυΛ੔ཧͰ͖Δؾ͕͢Δɻ͔͠͠ɺͲΜͳΞϓ
    ϩʔνͰ΍Δͷ͔ʁ
    w $IFDLFS͕.BUSJYʹ௚઀ґଘ͍ͯ͠Δͱ͜Ζ͔Βʁ
    

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19. 
    ґଘͱ͍͑͹ɾɾɾ
    ґଘؔ܎ٯసͷݪଇʢ%*1ʣ
    ͬͯϠπΛ࢖͏ͷ͔ͳɾɾɾ
    ্ҐϨϕϧͷϞδϡʔϧ͸ԼҐϨϕϧͷϞδϡʔ
    ϧʹґଘ͢΂͖Ͱ͸ͳ͍ɻ྆ํͱ΋ந৅
    ʢBCTUSBDUJPOT
    ʹґଘ͢΂͖Ͱ͋Δɻ
    

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20. ґଘؔ܎ٯసͷݪଇͬͯɺ
    ؒʹJOUFSGBDFΛ͸͞Ήܗʹ
    ͢Ε͹ྑ͍ΜͩΑͳɻ
    ˞஫ҙɿԋग़ͷ౎߹্ͷɺۃ୺ͳཧղྫͰ͢
    

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21. ґଘؔ܎ٯసʂ௚઀ґଘͯ͠·ͤΜʂ
    

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22. Կ͔ؒҧ͍ͬͯΔ
    ؾ͕͢Δ
    

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23. Ͳ͕ؒ͜ҧ͍ͬͯΔͷ͔
    આ໌͍ͯͩ͘͠͞ʂ
    

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24. Ͳ͕ؒ͜ҧ͍ͬͯΔͷ͔ʁ
    

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25. ந৅Խͱ͸
    

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26. ࣙॻతఆٛ
    ந৅ʢͪΎ͏͠ΐ͏ʣ
    ࣄ෺΍ද৅Λɺ͋Δੑ࣭ɾ
    ڞ௨ੑɾຊ࣭ʹண໨͠ɺ
    ͦΕΛந͖ग़ͯ͠೺Ѳ͢Δ
    ͜ͱɻ
    ࣺ৅ʢ͠Ό͠ΐ͏ʣ
    ֓೦Λந৅͢Δࡍʹɺந
    ৅͞Εͨॾද৅Ҏ֎ͷද
    ৅Λߟ࡯ͷର৅͔Β੾Γ
    ࣺͯΔ͜ͱɻ
    

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27. 4ɾ*ɾϋϠΧϫʮந৅ͷϋγΰʯ
    ʰࢥߟͱߦಈʹ͓͚ΔݴޠʱQ
    ܦݧͷର৅ʢ໒ڇʣ
    Պֶతঢ়ଶʢ໒ڇʣ
    ϕογʔ
    ޠʮ໒ڇʯ
    Ոச
    ೶৔ࢿ࢈
    ࢿ࢈
    ෋
    
    
    
    
    
    
    
    
    ݴޠ
    ந৅Խ
    ந৅Խ
    ந৅Խ
    

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28. ந৅Խʹ͓͚ΔมԽ
    ϕογʔ ޠʮ໒ڇʯ
    
    ந৅Խ
    ಛ௃ͷྔ ଟ͍ গͳ͍
    ର৅ͷ਺ গͳ͍ ଟ͍
    

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29. ந৅Ϩϕϧ͕͓͔͍͠จ
    ܦݧͷର৅ʢ໒ڇʣ
    Պֶతঢ়ଶʢ໒ڇʣ
    ϕογʔ
    ޠʮ໒ڇʯ
    Ոச
    ೶৔ࢿ࢈
    ࢿ࢈
    ෋
    
    
    
    
    
    
    
    
    ࢲ͸໌೔ͷேɺࢲୡͷࢿ࢈ʹ
    㕒Λ༩͑ͳ͚Ε͹͍͚ͳ͍
    ࢿ࢈
    㕒
    ผͷந৅Ϩϕ
    ϧ͕ࠞࡏͯ͠
    ͍Δʂ
    

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30. ந৅Խͷ·ͱΊ
    w ந৅ʹ͸Ϩϕϧ͕͋Δʢந৅ͷϋγΰʣ
    w ϋγΰΛ্Δʹ͸ɺಛ௃Λ੾Γࣺͯͯந৅Խ͢Δ

    ಛ௃ྔ͸ݮΔ͕ɺΑΓଟ͕͘ର৅ʹೖΔ
    w ந৅ͷϨϕϧ͕ἧ͍ͬͯͳ͍ͱɺίϛϡχέʔγϣ
    ϯͰ͖ͳ͍
    

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31. ϓϩάϥϛϯάʹ͓͚Δ
    ந৅Խͱ͸
    

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32. ݱ࣮ੈքɺϓϩάϥϛϯάͷੈք
    

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33. ݱ࣮ੈքɺϓϩάϥϛϯάͷੈք
    ࢿ࢈
    㕒
    ͓ۚ
    ϕογʔ
    

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34. ݱ࣮ੈքɺϓϩάϥϛϯάͷੈք
    ࢿ࢈
    㕒
    ͓ۚ
    ϕογʔ
    ฼ࠃޠɺߏจɺޠኮ
    ಓ
    ۩
    

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35. ݱ࣮ੈքɺϓϩάϥϛϯάͷੈք
    ࢿ࢈
    㕒
    ͓ۚ
    ϕογʔ
    .BUSJY
    νΣοΫ
    Ϛε
    ϧʔϧ
    ฼ࠃޠɺߏจɺޠኮ
    ಓ
    ۩
    

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36. ݱ࣮ੈքɺϓϩάϥϛϯάͷੈք
    ࢿ࢈
    㕒
    ͓ۚ
    ϕογʔ
    .BUSJY
    νΣοΫ
    Ϛε
    ϧʔϧ
    ฼ࠃޠɺߏจɺޠኮ ϓϩάϥϛϯάݴޠɺߏจɺޠኮ
    ಓ
    ۩
    

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37. ϓϩάϥϛϯάʹ͓͚Δந৅Խͱ͸
    ѻ͍ͬͯΔ໰୊΍֓೦ͷந৅Խ
    *OUFSGBDF΍"CTUSBDUDMBTTΛ࢖͏͜ͱ
    ͜ΕΛୡ੒͢ΔͨΊʹɺݴޠʹ༻ҙ͞Ε͍ͯΔ༷ʑͳ
    ػೳΛ࢖͏ʢ*OUFSGBDFɺ"CTUSBDUɺFUDʣ
    

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38. ࢦ਑͸ʁ
    

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39. ϓϩάϥϛϯάʹ͓͚Δ໰୊ͷந৅Խͷࢦ਑ Ծ
    
    ద੾ͳ໋໊
    ໊લͱ಺༰͕Ұக͠
    ͍ͯΔ͜ͱ
    ந৅౓ͷ౷Ұ
    ͋Δଆ໘͕औΓग़͞
    Εͨ΋ͷ͚ͩͰ⁋᧒
    ͕߹͏͜ͱ
    ڱ͍ൣғ
    ߟྀ͢Δಛ௃ͷ਺͕
    খ͘͞ͳ͍ͬͯΔ͜
    ͱ
    ˞஫ҙɿIJEFOPSJHPUPʹΑΔࡶͳఏҊͰ͢
    

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40. ͜ͷந৅Խ͸Կ͕ؒҧ͍ͬͯͨʁ
    

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41. ͜ͷந৅Խ͸Կ͕ؒҧ͍ͬͯͨʁ
    ద੾ͳ໋໊
    

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42. ͜ͷந৅Խ͸Կ͕ؒҧ͍ͬͯͨʁ
    ந৅౓ͷ౷Ұ
    

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43. ͜ͷந৅Խ͸Կ͕ؒҧ͍ͬͯͨʁ
    ڱ͍ൣғ
    

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44. ͜ͷந৅Խ͸Կ͕ؒҧ͍ͬͯͨʁ
    ڱ͍ൣғ
    ଞʹϝιου͕͋Δ
    ͚̍ͭͩ
    

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45. ͜ͷந৅Խ͸Կ͕ؒҧ͍ͬͯͨʁ
    ڱ͍ൣғ
    

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46. վળྫ
    

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47. ґଘؔ܎ͷຊ࣭ΛݟۃΊΔ
    

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48. ґଘؔ܎ͷຊ࣭ΛݟۃΊΔ
    w $IFDLFSͱ.BUSJYͷຊ࣭తͳؔ܎ɺ໾ׂΛߟ͑Δ

    $IFDLFS͸ɺ࠷௿ݶԿ͕͋Ε͹੹຿ΛՌͨͤΔ͔
    

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49. ґଘؔ܎ͷຊ࣭ΛݟۃΊΔ
    w $IFDLFSͱ.BUSJYͷຊ࣭తͳؔ܎ɺ໾ׂΛߟ͑Δ

    $IFDLFS͸ɺ࠷௿ݶԿ͕͋Ε͹੹຿ΛՌͨͤΔ͔
    w $IFDLFS͸ɺݸͷ਺ࣈΛड͚औΕ͹ɺͦΕ͕0,͔/(
    ͔Λ൑ఆͰ͖Δ
    

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50. ґଘؔ܎ͷຊ࣭ΛݟۃΊΔ
    w $IFDLFSͱ.BUSJYͷຊ࣭తͳؔ܎ɺ໾ׂΛߟ͑Δ

    $IFDLFS͸ɺ࠷௿ݶԿ͕͋Ε͹੹຿ΛՌͨͤΔ͔
    w $IFDLFS͸ɺݸͷ਺ࣈΛड͚औΕ͹ɺͦΕ͕0,͔/(
    ͔Λ൑ఆͰ͖Δ
    w ݸͷ਺ࣈͷ഑ஔ͸ɺ൑ఆʹ͸ؔ܎͕ͳ͍
    

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51. $IFDLFS͸਺ࣈͷྻ͚ͩΛѻ͏
    

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52. ਺ࣈͷྻͷੜ੒͸ΞμϓλʔͰٵऩ͢Δ
    

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53. View Slide

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56. վળલͷ$IFDLFSͱൺֱ
    

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57. ڱ͍ൣғ΁ந৅Խ
    ந৅౓౷Ұ
    .BUSJYΛѻ͏
    $IFDLFS
    /VNCFS$PMMFDUJPO
    Λѻ͏$IFDLFS
    .BUSJYશମ
    ਺ࣈͷྻ
    

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58. 6.-
    $IFDLFS͸.BUSJY͔Β੾Γ཭͞Εͨ
    

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59. ந৅ԽͷԸܙ
    w $IFDLFSΫϥεͷίʔυ͕ݮͬͨ
    w $IFDLFSΫϥεͷґଘର৅͕খ͘͞ͳͬͨ
    

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60. ·ͱΊ
    

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61. ͜ͷτʔΫͷ໨ඪ
    

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62. ͜ͷτʔΫͷ໨ඪ
    w ݱ࣮ੈքʹ͓͚Δந৅Խͱ͸ͲͷΑ͏ͳ͜ͱͳͷ͔ɺ
    ཧղ͢Δ
    

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63. ͜ͷτʔΫͷ໨ඪ
    w ݱ࣮ੈքʹ͓͚Δந৅Խͱ͸ͲͷΑ͏ͳ͜ͱͳͷ͔ɺ
    ཧղ͢Δ
    w ϓϩάϥϛϯάʹ͓͚Δந৅Խͱ͸ͲͷΑ͏ͳ͜ͱ
    ͳͷ͔ɺཧղ͢Δ
    

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64. ͜ͷτʔΫͷ໨ඪ
    w ݱ࣮ੈքʹ͓͚Δந৅Խͱ͸ͲͷΑ͏ͳ͜ͱͳͷ͔ɺ
    ཧղ͢Δ
    w ϓϩάϥϛϯάʹ͓͚Δந৅Խͱ͸ͲͷΑ͏ͳ͜ͱ
    ͳͷ͔ɺཧղ͢Δ
    w ந৅Խͷࢦ਑Λ஌Γɺந৅Խͷྑ͠ѱ͠Λ൑அͰ͖
    ΔΑ͏ʹͳΔ
    

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65. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠
    

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66. ࢀߟ
    w 4ɾ*ɾϋϠΧϫʰࢥߟͱߦಈʹ͓͚Δݴޠʱݪॻୈ
    ࢛൛ؠ೾ॻళ
    

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