「SOLIDの原則って何ですか？」って質問に答えたかった / What's SOLID principle

Transcript

1. ઒ౡܛ
   
   (.0
   1FQBCP
   *OD
   
   1)1ษڧձ ʮ40-*%ͷݪଇͬͯԿͰ͔͢ʁʯ
   ࣭ͬͯ໰ʹ౴͔͑ͨͬͨ

2. ΞϓϦέʔγϣϯΤϯδχΞ ઒ౡܛ
   
   !OB[POPIJUP 4)ࣄۀ෦+6(&.νʔϜ IUUQOB[POPIJUPKVHFNKQ

3. 40-*%ͷݪଇ

4. Single responsibility principle Open/closed principle Liskov substitution principle Interface segregation

   principle Dependency inversion principle ୯Ұ੹೚ͷݪଇ ։์ด࠯ͷݪଇ Ϧείϑͷஔ׵ݪଇ ΠϯλʔϑΣʔε෼཭ͷݪଇ ґଘੑٯసͷݪଇ 40-*%ͷݪଇ

5. %FWFMPQFS
   3PBENBQ  IUUQTHJUIVCDPNLBNSBOBINFETFEFWFMPQFSSPBENBQ

6. %FWFMPQFS
   3PBENBQ  IUUQTHJUIVCDPNLBNSBOBINFETFEFWFMPQFSSPBENBQ

7. Single responsibility principle Open/closed principle Liskov substitution principle Interface segregation

   principle Dependency inversion principle ୯Ұ੹೚ͷݪଇ ։์ด࠯ͷݪଇ Ϧείϑͷஔ׵ݪଇ ΠϯλʔϑΣʔε෼཭ͷݪଇ ґଘੑٯసͷݪଇ 40-*%ͷݪଇ

8. 40-*%ͷݪଇ Single responsibility principle Open/closed principle Liskov substitution principle Interface

   segregation principle Dependency inversion principle ୯Ұ੹೚ͷݪଇ ։์ด࠯ͷݪଇ Ϧείϑͷஔ׵ݪଇ ΠϯλʔϑΣʔε෼཭ͷݪଇ ґଘੑٯసͷݪଇ ͬͪ͜͡Όͳͯ͘

9. Single responsibility principle Open/closed principle Liskov substitution principle Interface segregation

   principle Dependency inversion principle ୯Ұ੹೚ͷݪଇ ։์ด࠯ͷݪଇ Ϧείϑͷஔ׵ݪଇ ΠϯλʔϑΣʔε෼཭ͷݪଇ ґଘੑٯసͷݪଇ 40-*%ͷݪଇ ͬͪ͜ʂʂʂʂ

10. ͭͷݪଇηοτͷBDSPOZNʢ಄ࣈޠʣͰ͋Δ͜ͱҎ֎
    Կ΋஌Βͳ͍
    

11. ΘΓͱ౜ಥʹઆ໌͕࢝·Δ

12. ಥવฉ͔Εͨ࣌ʹઆ໌͠Α͏ͱ͢Δͱ
    Ή͍ͣ

13. ௐ΂ͨ ˞ॻ੶ΛಡΊ͹෼͔Δൣғ͸ࠓճѻ͍·ͤΜ

14. ྺ࢙తܦҢʹ͍ͭͯ

15. ࡞ͬͨʢൃදͨ͠ʣਓ 3PCFSU
    $
    .BSUJO ΞϝϦΧͷιϑτ΢ΣΞΤϯδχΞ
    6ODMF
    #PCʢϘϒ͓͡͞ΜʣͷѪশͰ஌ΒΕΔ
    ͍͔ͭ͘ͷιϑτ΢ΣΞઃܭݪଇΛ։ൃͨ͠ IUUQTFOXJLJQFEJBPSHXJLJ3PCFSU@$@.BSUJO

16. IUUQTHSPVQTHPPHMFDPNGPSVN IMFOUPQJDDPNQPCKFDU8*$1%D9".( ॳग़

17. 5FO
    $PNNBOENFOUT ү໺ʂ001ͷ ेռ࡞Ζ͏ͥʂ λΠτϧ༁ɿ

18.  ΫϥεϞδϡʔϧ͸֦ுʹରͯ͠։͖ɺमਖ਼ʹରͯ͠͸ด͡ͳ͚Ε͹ͳΒͳ͍ʢ#FSUSBOE
    .FZFSͷΦʔϓϯΫϩʔζυͷݪଇʣ
     ೿ੜΫϥε͸جຊΫϥεͱަ׵ՄೳͰͳ͚Ε͹ͳΒͳ͍ʢ-JTLPWͷஔ׵ݪଇʣ
     ৄࡉ͸ந৅ʹґଘ͠ͳ͚Ε͹ͳΒͣɺந৅͸ৄࡉʹґଘͯ͠͸ͳΒͳ͍ʢґଘੑٯసͷݪଇʣ
     ࠶ར༻ͷཻ౓ͱϦϦʔεͷཻ౓͸ಉ͡ʹ͢΂͖
     ಉ͡ཧ༝Ͱมߋ͞ΕΔΫϥε܈ΛҰͭͷίϯϙʔωϯτʹ·ͱΊΔ͜ͱ
    

     ίϯϙʔωϯτͷϦϦʔε͞ΕΔ୯Ґͱ࠶ར༻ͷ୯Ґ͸ಉ͡Ͱ͋Δ΂͖
     ϦϦʔε͞Εͨίϯϙʔωϯτؒͷґଘؔ܎͸॥؀ͯ͠͸ͳΒͳ͍
     ϦϦʔε͞Εͨίϯϙʔωϯτؒͷґଘͷํ޲͸ɺΑΓ҆ఆͨ͠ํ޲ʹ޲͍ͯͳ͚Ε͹ͳΒͳ͍
     ΑΓ҆ఆͨ͠ίϯϙʔωϯτ͸ΑΓଟ͘ͷந৅ΫϥεͰߏ੒͞ΕΔ΂͖
    
    
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    ͭͷύϥμΠϜΛލ͙࣌͸ඞͣ྆ऀΛ෼͚ΔΠϯλʔϑΣʔεϨΠϠʔΛ੾Δ͜ͱ طʹ40-*%ͷݪଇͷݪܕ͕͋ͬͨ 3PCFSU
    $
    .BSUJOͷ౤ߘ ˢʂʁ

19. ͳΔ΄Ͳɺ40-*%ͷݪଇ͸
    3PCFSU
    $
    .BSUJOݸਓͷ੒Ռ෺ͳΜͩͳʁ

20. ͜ΕΒͷݪଇ͸ɺԿे೥ʹ΋ٴͿઌਓͷܦݧ ͷ஝ੵ͔Βੜ·Εͨιϑτ΢ΣΞ޻ֶͷ੒Ռ Ͱ͋Δɻ͜ΕΒͷ੒Ռ͸Ұਓͷ಄೴͔Βੜ· Εͨ΋ͷͰ͸ͳ͍ɻඇৗʹଟ͘ͷιϑτ΢Σ Ξ։ൃऀ΍ݚڀऀͷࢥࡧ΍࿦จΛूେ੒ͨ͠ ΋ͷͳͷͩɻ ΞδϟΠϧιϑτ΢ΣΞ։ൃͷԞٛ
    ୈ̎෦ɹΞδϟΠϧઃܭ

21. ୯Ұ੹೚ͷݪଇ ։์ด࠯ͷݪଇ Ϧείϑͷஔ׵ݪଇ ΠϯλʔϑΣʔε෼཭ͷݪଇ ґଘੑٯసͷݪଇ ൃҊऀɿ#BSCBSB
    -JTLPW
    ൃҊऀɿ#FSUSBOE
    .FZFS ൃҊऀɿ3PCFSU
    $
    .BSUJO ൃҊऀɿ3PCFSU
    $
    .BSUJO ൃҊऀɿ3PCFSU
    $
    .BSUJO

    ˞5PN
    %F.BSDPͱ.FJMJS
    1BHF+POFTͷஶॻʹج͍͍ͮͯΔʁ αϒηοτ͸࡞͚ͬͨͲɺݸݸ͸ҧ͏

22. ʮݪଇʯͬͯͳΜͩʁ

23. ݪଇ IUUQTEJDUJPOBSZDBNCSJEHFPSHEJDUJPOBSZFOHMJTIQSJODJQMF zಓಙతͳϧʔϧ·ͨ͸ྑ͍ߦಈͷج४z 1SJODJQMF B
    NPSBM
    SVMF
    PS
    TUBOEBSE
    PG
    HPPE
    CFIBWJPVS

24. ྑ͍Ҿ༻ݩ͕ݟ͔ͭΒͳ͍

25. ಠࣗղऍͰ͕͢ ݪଇͱ͸ ༗ҙͳ۩৅ͷཪʹ ීวతʹྲྀΕΔ๏ଇੑ Λநग़ͨ͠΋ͷ ͱɺଊ͓͑ͯΓ·͢

26. ۩৅" ۩৅' ۩৅# ۩৅$ ۩৅% ۩৅& ᶃ๏ଇੑΛநग़ ᶄ๏ଇੑʹैͬͯ࡞੒ ݪଇ

27. ۩৅" ۩৅' ۩৅# ۩৅$ ۩৅% ۩৅& ᶃ๏ଇੑΛநग़ ᶄ๏ଇੑʹैͬͯ࡞੒ ݪଇ ಉ༷ͷੑ࣭Λ͍࣋ͬͯΔ͜ͱ͕ظ଴Ͱ͖Δ

28. ྑ͍ઃܭͷίʔυ" ʢͨͿΜྑ͍ઃܭͷʣ
    ίʔυ' ˞ྑ͍Ҿ༻ݩ͕ݟ͔ͭΒͳ͔ͬͨͷͰࢲݸਓͷਪଌͱͳΓ·͢ ྑ͍ઃܭͷίʔυ# ྑ͍ઃܭͷίʔυ$ ྑ͍ઃܭͷίʔυ% ྑ͍ઃܭͷίʔυ& ᶃ๏ଇੑΛநग़ ᶄ๏ଇੑʹଇͬͨίʔυͷ࡞੒

    40-*%ͷݪଇ

29. ʮྑ͍ઃܭʯJT $MFBO"SDIJUFDUVSF
    ୈ***෦ɹઃܭͷݪଇ มߋʹڧ͍͜ͱ
    ཧղ͠΍͍͢͜ͱ
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30. 40-*%ͷݪଇ͸
    զʑϓϩάϥϚ͕
    ९क͢΂͖ϧʔϧͳͷ͔ʁ

31. IUUQTTJUFTHPPHMFDPNTJUFVODMFCPCDPOTVMUJOHMMDHFUUJOHBTPMJETUBSU

32. 40-*%ͷݪଇ͸ϧʔϧͰ͸͋Γ·ͤΜ͠ɺ
    ๏Ͱ͸͋Γ·ͤΜ͠ɺ׬શͳਅ࣮Ͱ΋͋Γ·ͤΜɻ
    ʮϦϯΰ೔ݸͰҩऀ஌Βͣʯͱ͍͏ݵ͕͋Γ·͢ɻ
    ͜Ε͸ྑ͍ݪଇͰ͋Γɺྑ͍ΞυόΠεͰ͕͢ɺ
    ͦΕ͸७ਮͳਅ࣮Ͱ͸ͳ͘ɺ·ͨϧʔϧͰ΋͋Γ·ͤΜɻ
    ʢ˞40-*%ͷݪଇ΋ͦ͏͍͏΋ͷͰ͋Δͱݴ͍͍ͨΜͩͱࢥ͏ʣ 5IF
    40-*%
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    HPPE
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    JU`T
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    OPS
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    JU
    B
    SVMF

33. cubby-holes 5IF
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    DVCCZIPMFT
    5IFZ
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    UP
    B
    DPODFQU
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    UIBU
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    BCPVU
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    DPODFQU
    5IFZ
    QSPWJEF
    B
    QMBDF
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    IBOH
    UIF
    GFFMJOHT
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    CBE
    DPEF ͜ͷݪଇͨͪ͸৺ͷ੔ཧ୨ͳͷͰ͢ɻ
    ͜ΕΒ͸֓೦ʹର໊ͯ͠લ෇͚ͯ͘͠ΕΔͷͰɺ
    ͋ͳͨ͸֓೦ʹ͍ͭͯ࿩ͨ͠Γߟ͑ͨΓ͢Δ͜ͱ͕Ͱ͖ΔΑ͏ʹͳΓ·͢ɻ
    ͜ΕΒ͸ࢲ͕ͨͪྑ͍ίʔυͱѱ͍ίʔυʹ͍͍ͭͯ࣋ͬͯΔ
    ײ৘ͷ੔ཧ৔ॴΛఏڙ͠·͢ɻ

34. 5IFTF
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    ͜ΕΒ͸Ұൠతͳ໰୊ʹର͢ΔৗࣝతͳղܾࡦͰ͋Γɺ
    ͋ͳ͕ͨτϥϒϧ͔Βൈ͚ग़͢ͷΛॿ͚Δ͜ͱ͕Ͱ͖ΔৗࣝతͳڭཆͰ͢ɻ
    ͔͠͠ɺώϡʔϦεςΟοΫͱಉ͡Α͏ʹɺ
    

    ͜ΕΒ͸ຊ࣭తʹܦݧଇʹجͮ͘΋ͷͰ͢ɻ
    ͜ΕΒͷݪଇ͕ଟ͘ͷ৔߹ʹػೳ͢Δ͜ͱ͕෼͔͍ͬͯ·͕͢ɺ
    ৗʹػೳ͢Δͱ͍͏ূڌ΋ɺ
    ͜ΕΒʹৗʹै͏΂͖Ͱ͋Δͱ͍͏ূڌ΋͋Γ·ͤΜɻ

35. ϧʔϧͱ͍͏ΑΓɺ ࢦ਑ ͬͯ දݱͯ͠͠·ͬͨํ͕ޡղ͸গͳͦ͏ Ψ
    Π
    υ
    ϥ
    Π
    ϯ

36. ·ͱΊ w40-*%ͷݪଇ͸3PCFSU
    $
    .BSUJO͕·ͱΊͨ΋ͷ
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    wࣗ෼ͷߟ͑Λ੔ཧͨ͠Γɺઃܭͷྑ͠ѱ͠Λ൑அͨ͠ΓɺνʔϜͷڞ ௨ݴޠج൫ʹͳΔͳͲͷޮՌ΋ظ଴Ͱ͖Δ
    w໡໨తʹै͏΂͖ϧʔϧͱ͍͏΋ͷͰ͸ͳ͘ɺࢀߟʹ͢Δͱ޾ͤʹͳ ΔΨΠυϥΠϯఔ౓ͷظ଴ײͰࢀর͢Δͱྑͦ͞͏

37. ·ͱΊ w40-*%ͷݪଇ͸3PCFSU
    $
    .BSUJO͕·ͱΊͨ΋ͷ
    wྑ͍ઃܭͷ๏ଇੑΛநग़ͨ͠΋ͷͰɺݪଇΛҙࣝͨ͠ίʔυΛॻ͘͜ ͱʹΑͬͯྑ͍ઃܭͷίʔυʹͳΔ͜ͱ͕ظ଴Ͱ͖Δ
    wࣗ෼ͷߟ͑Λ੔ཧͨ͠Γɺઃܭͷྑ͠ѱ͠Λ൑அͨ͠ΓɺνʔϜͷڞ ௨ݴޠج൫ʹͳΔͳͲͷޮՌ΋ظ଴Ͱ͖Δ
    w໡໨తʹै͏΂͖ϧʔϧͱ͍͏΋ͷͰ͸ͳ͘ɺࢀߟʹ͢Δͱ޾ͤʹͳ ΔΨΠυϥΠϯఔ౓ͷظ଴ײͰࢀর͢Δͱྑͦ͞͏ ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠