コードレビューの話

新卒エンジニア向けにコードレビューを「する」話をしました。
http://hisaichi5518.hatenablog.jp/entry/2014/10/29/165721

Transcript

1. (.01FQBCP *OD
   IJTBJDIJ
   ৽ଔݚम
   ίʔυϨϏϡʔͷ࿩
   

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2. ࣗݾ঺հ
   ͻ͍ͪ͞
   

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3. લ৬Ͱ΍ͬͯͨࣄ
   ιʔγϟϧήʔϜͷ"1*࡞ͬͯͨ
   ϦʔυΤϯδχΞ
   ϓϩδΣΫτͷϓϧϦΫɺશ෦ίʔυϨϏϡʔͯ͠
   ͨ
   ଞͷਓͻ͍͕ͪ͞0,͢Ε͹ϚʔδΈ͍ͨͳɻ௒
   େมͩͬͨʜʜʜʜʜ
   ίʔυϨϏϡʔʹ͍ͭͯߟ͑Δ͜ͱ͕ଟ͔ͬͨɻ
   

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4. ࠓ೔࿩͞ͳ͍ࣄ
   ϨϏϡʔͯ͠΋Β͏ͱ͖ͷ࿩
   ίʔυϨϏϡʔཷ·Δ໰୊ͱ͔ӡ༻
   ͯ͠Δͱग़ͯ͘Δ໰୊
   ίʔυϨϏϡʔಋೖ౳
   ίʔυϨϏϡʔΛʮ͢Δʯ࿩Λ͠·͢ɻ
   

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5. ίʔυϨϏϡʔͱ͸
   ίʔυϨϏϡʔʢӳ$PEFSFWJFXʣ
   ͸ɺιϑτ΢ΣΞ։ൃ޻ఔͰݟա͝
   ͞ΕͨޡΓΛݕग़ɾमਖ਼͢ΔͨΊʹ
   ιʔείʔυͷମܥతͳݕࠪʢࠪಡʣ
   Λߦ͏͜ͱɻ
   

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6. ίʔυϨϏϡʔͱ͸
   ίʔυϨϏϡʔʢӳ$PEFSFWJFXʣ
   ͸ɺιϑτ΢ΣΞ։ൃ޻ఔͰݟա͝
   ͞ΕͨޡΓΛݕग़ɾमਖ਼͢ΔͨΊʹ
   ιʔείʔυͷମܥతͳݕࠪʢࠪಡʣ
   Λߦ͏͜ͱɻ
   

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7. ຊ౰ʹ
   ͦΕ͚ͩʁ
   

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8. ίʔυϨϏϡʔͷ໨త
   ػցతʹൃݟग़དྷͳ͍ޡΓͷൃݟ
   ٕज़ྗ޲্
   ଐਓੑഉআ
   

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9. ͜ͷͭͷதͰ
   ৽ଔࢯ͕ʮࠓʯٻΊΒΕΔࣄ
   

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10. ʮࠓʯɺ৽ଔࢯͨͪʹظ଴͞ΕΔͰ͋Ζ͏͜ͱ
    ٕज़ྗ޲্
    ଐਓੑͷഉআ
    

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11. ίʔυϨϏϡʔͷ໨త
    ػցతʹൃݟग़དྷͳ͍ޡΓͷൃݟ
    ٕज़ྗ޲্
    ଐਓੑഉআ
    ͍ͭ͜͸ʁʁʁ
    

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12. ϨϕϧͱϨϕϧ
    Կࣄʹ΋ஈ֊͕͋Δ
    Ϩϕϧͱʹ෼͚ͯɺ·ͣ͸Ϩϕϧ
    Λग़དྷΔΑ͏ʹ͢Δɻ
    

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13. ֤໨తͷΰʔϧ
    ٕज़ྗ޲্
    ίʔυ͕ͳͥͦ͏ͳ͍ͬͯΔͷ͔ཧղग़
    དྷΔ
    ଐਓੑͷഉআ
    ίʔυ͕ͳͥͦ͏ͳ͍ͬͯΔͷ͔ཧղग़
    དྷΔ
    

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14. ·Δͬͱ·ͱΊͯ
    ίʔυΛཧղ͢Δ
    

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15. Ϩϕϧ
    ίʔυΛཧղ͢Δ
    

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16. ίʔυΛཧղ͢Δͬͯ
    Ͳ͏͢Ε͹͑͑Μ΍ʜ
    ೉͍͠Θʜʜʜ
    

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17. ϨϕϧΛୡ੒͢ΔͨΊͷ
    ίʔυϨϏϡʔʹ͓͍ͯ
    ΍Δ͜ͱ͸͚ͭͩ
    

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18. Θ͔Βͳ͍ࣄΛฉ͘
    

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19. ίʔυ͕ཧղͰ͖ΔΑ͏ʹͳΔʹ͸
    ͳΜͰ͜͏ͳ͍ͬͯΔͷ͔ʁΛߟ
    ͑ͳ͕ΒίʔυΛಡΉ
    Θ͔Βͳ͍ͱ͜Ζ͕͋Δͱ೰Ή
    ෼೰ΜͩΒࣗ෼Ͱ͸Θ͔Βͳ
    ͍ͱ൑அͯ͠ฉ͘ɻ
    

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20. ίʔυ͕ཧղͰ͖ΔΑ͏ʹͳΔʹ͸
    ʮͳΜͰ͜͜ʹϝιουॻ͍ͯΔΜͩΖʯ
    ʮͳΜͰ"͡Όͳͯ͘#ͬͯॻ͖ํͳΜͩΖʁʯ
    ʮͳΜͰ͜͜Ͱ"ͯ͠ΔΜͩΖʁʯ
    ʮͳΜͰʜʜʜʜʜʯ
    ʮͳΜͰͳΜ΍ʜʜʜʜʯ
    ʮͳΜͰʙʙʙʙʙʙʯ
    

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21. ͳΜͰɾ೰Ήɾฉ͘
    Λ܁Γฦ͍ͯ͠Δͱ
    Ϩϕϧ͕ग़དྷΔΑ͏ʹͳΔ
    

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22. ͳΜͰɾ೰Ήɾฉ͘
    Λ܁Γฦ͍ͯ͠Δͱ
    ίʔυ͕ཧղग़དྷΔΑ͏ʹͳΔ
    

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23. Ϩϕϧୡ੒
    

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24. ίʔυϨϏϡʔͷ໨త
    ػցతʹൃݟग़དྷͳ͍ޡΓͷൃݟ
    ٕज़ྗ޲্
    ଐਓੑഉআ
    ࣍͸ɺ͍ۙকདྷٻΊΒΕΔɺίΠπʂʂʂ̍̍
    

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25. Ϩϕϧ
    ػցతʹൃݟग़དྷͳ͍ޡΓͷ
    ൃݟ
    

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26. ػցతʹൃݟग़དྷΔ΋ͷ
    42-ͷ/໰୊
    ίʔυͷϑΥʔϚοτ
    

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27. 42-/໰୊
    ϧʔϓͷதͰ42-ൃߦ͠·͘Γ
    ճϧʔϓͨ͠Β42-͕
    ճୟ͔ΕΔʢ˔ʆЏ˔ʣ
    3BJMTʹ͸ɺCVMMFUͱ͍͏ͷ͕͋Δ
    CVMMFU͸ɺ/໰୊Λൃݟग़དྷΔ
    

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28. ίʔυϑΥʔϚοτ
    SVCPDPQͱ͔Λ࢖ͬͯɺελΠϧʹ
    ҧ൓ͨ͠ΒKFOLJOT͕͚͜Δͱ͔͢
    Δɻ
    

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30. ػցతʹΘ͔Δ΋ͷ͸
    ػցʹ೚ָͤͯΛ͢Δ
    

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31. ػցతʹൃݟग़དྷͳ͍PSग़དྷΔ͕খ೉͍͠
    ηΩϡϦςΟ
    42-
    ϨʔείϯσΟγϣϯ
    ࢓༷ͱίʔυͷໃ६
    ࣮ߦ଎౓
    ઃܭ
    Θ͔Γ΍͢͞
    "ͱ#ɺͲͪΒ͕φ΢͍ʁ
    

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32. ηΩϡϦςΟ
    944
    $43'
    42-ΠϯδΣΫγϣϯ
    ৄ͘͠͸
    

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33. 42-
    ΠϯσοΫε࢖ΘΕͯͳ͍
    ΠϯσοΫεແବʹషͬͯΔ
    

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34. ϨʔείϯσΟγϣϯ
    ಉ࣌ʹ࣮ߦ͞ΕͨΒ͏ΜͨΒ͔Μͨ
    Βʂʂʂʂʂʂʂʂʂʂʂʂʂ
    

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35. ࢓༷ͱίʔυͷໃ६
    ͦ΋ͦ΋͜ͷίʔυɺ࢓༷ʹ߹ͬͯ
    ͳ͍݅
    ςετҙຯͳ͍݅
    

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36. ࣮ߦ଎౓
    ͬͪ͜ͷํ͕ૣ͘Ͷʁʁʁʁ
    ඞͣϕϯνϚʔΫऔΔ
    Ωϟογϡͨ͠ํ͕͍͍͔΋ɺΈͨ
    ͍ͳ࿩ͱ͔΋͢Δ
    

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37. ઃܭ
    ίϯτϩʔϥʔʹϩδοΫΛॻ͘΂
    ͖Ͱ͸ͳ͍͏ΜͨΒ͔ΜͨΒ
    ίʔυϨϏϡʔͷ࣌఺Ͱ͜ͷ࿩͕ग़
    ΔΑ͏Ͱ͋Ε͹ɺίʔυΛॻ͘લʹ
    ૬ஊ͢ΔΑ͏ʹ͢Δɻ
    

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38. Θ͔Γ΍͢͞
    "ͱ#ɺൺ΂Δͱ"ͷํ͕Θ͔Γ΍͍͢ʂʂ̍
    WJNWT&NBDTͷΑ͏ͳͨͩͷԥΓ߹͍ʹͳ
    ΔՄೳੑ͕͋Δ
    ౴͕͑ͳ͍΋ͷʹؔͯ͠͸ɺର໘Ͱ࿩͢
    ʙ෼࿩ͯ͠ෆໟͱࢥͬͨΒෆໟͰ͢Ͷͬ
    ͯݴͬͯऴΘΒͤΔɻ
    

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39. "ͱ#ɺͲ͕ͬͪφ΢͍ʁ
    ࠓ͸ɺͬͪ͜ͷ΄͏͕φ΢͍ͥʂΈ
    ͍ͨͳͷ݁ߏ͋Δ
    άάͬͯݟ͚ͭͨͷ͕Φϫίϯʹͳͬ
    ͯΔՄೳੑ΋ʂʂʂʂʂ
    

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40. ʢ˔ʆЏʅ˔ʣ
    

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41. Ϩϕϧ
    ϝονϟϜζΠ
    

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42. ͜ΕΒ͕ग़དྷΔΑ͏ʹͳΔʹ
    ͸ɺ༷ʑͳ஌ࣝɾܦݧ͕ඞཁ
    

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43. ͦͯ͠ɺେલఏͱͯ͠
    ଞͷਓͷίʔυΛݟͯ
    ཧղग़དྷΔඞཁ΋͋Δɻ
    

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44. ͦΜͳ͜ΜͳͰ
    

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45. ίʔυϨϏϡʔͷ໨తΛཧղͯ͠
    ࠓɺ΍Δ΂͖͜ͱ΋ཧղग़དྷɺ
    ͦͷ΍Γํ΋ཧղग़དྷͨɻ
    ͦͷ࣍ʹ΍Δ͜ͱ΋Θ͔ͬͨʂʂ
    ΋͏ίʔυϨϏϡʔ͸׬ᘳʂʂ
    

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46. Ͱ͸ͳ͍ͷͰ͢ʜ
    

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47. ୈೋ෦
    ίʔυϦʔσΟϯάฤ
    

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48. ίʔυΛಡΉɻ
    τςϞɺϜζΧγΠ
    

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49. ࠷ߴͷಡΈํΛ
    ڭ͑ͯ΄͍͠ʂ
    

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50. Զ͕஌Γ͍ͨ
    Θʂʂʂʂʂ
    ʂʂʂʂʂʂ
    ʂʂʂʂʂʂ
    

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51. ίʔυϨϏϡʔ࣌ͷಡΈํ
    ʙͻ͍ͪ͞ฤʙ
    

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52. ݸͷεςοϓ
    

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53. ղܾ͍ͨ͠໰୊Λཧղ͢Δ
    ϓϧϦΫͷαϚϦʔΛಡΉ
    Կ͕͍͔ͨ͠
    ԿͷͨΊʹ͢Δͷ͔
    

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54. ςετ͕௨ͬͯΔ͔֬ೝ
    ςετ௨ͬͯͳ͍ͱجຊతʹ͸ݟͳ
    ͍
    

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55. ίϛοτϩάͱมߋ͞ΕͨίʔυΛશ෦ݟΔ
    ҰͭҰͭݟΔ
    ίϛοτϩάʹͳΜͰͦ͏͔ͨ͠ॻ͔ΕͯΔࣄ
    ͕͋ΔͷͰίϛοτϩάΛݟΔɻ
    ؾʹͳΔͱ͜Ζɾٙ໰͕͋ͬͨΒϝϞ͓ͯ͘͠
    ݟͨॠؒʹίϝϯτͨ͘͠ͳΔͷͰɺखݩͰUJH
    Λ࢖ͬͯݟΔɻ
    

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56. ಈ͔ͯ͠ΈΔ
    ίϛοτϩάΛશ෦ோΊऴΘͬͨΒɺ
    ؾʹͳͬͨͱ͜Ζͱ͔खݩͰಈ͔͠
    ͯΈΔ
    

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57. 'JMFT$IBOHFEΛோΊΔ
    શମͷ%J⒎ΛݟΔɻ
    εςοϓͰϝϞͨ͠ͱ͜Ζͷ੔ཧ
    

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58. 'JMFT$IBOHFEͷͱ͜ΖʹίϝϯτΛॻ͘
    ϝϞͨ͠ͱ͜ΖΛ(JUIVCʹίϝϯτ
    ͍ͯ͘͠
    

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59. ͜ͷݸͷεςοϓ
    ຖճ΍Δඞཁ͋Δʁ
    

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60. ͳ͍Ͱ͢
    

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61. ͜ͷ΍Γํ͸ϕετͰ͸ͳ͍͠ɺ
    ϕετ͸ଘࡏ͠ͳ͍ɻ
    ࣗ෼ͳΓͷ΍ΓํΛ୳͠ଓ͚Δ͔͠ͳ͍ɻ
    

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62. ͦΜͳ͜ΜͳͰ
    

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63. ུ
    
    ΋͏ίʔυϨϏϡʔ
    ͸׬ᘳʂʂ
    

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64. Ͱ͸ͳ͍ͷͰ͢ʜ
    

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65. ୈࡾ෦
    ఻͑ํׂ͕ฤ
    

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66. ͜ͷεϥΠυΛ࡞Δʹ౰ͨͬͯɺ
    લ৬ޙഐ !.BDP@5BTV
    ʹ
    νʔϜʹδϣΠϯͨ࣌͠ͷ
    ίʔυϨϏϡʔʹ͍ͭͯฉ͍ͯΈͨɻ
    

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67. ҙ͍ࣝͯͨ͜͠ͱ͸ʁ
    ʮͳΜͰ͜͏ͯ͠ΔΜͩʁʯ͓ͬͯ
    ΋ͬͨΒ·ͣฉ͘
    ϨϏϡʔͷॻ͖ํ
    

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68. ҙ͍ࣝͯͨ͜͠ͱ͸ʁ
    ʮͳΜͰ͜͏ͯ͠ΔΜͩʁʯ͓ͬͯ
    ΋ͬͨΒ·ͣฉ͘
    ϨϏϡʔͷॻ͖ํ
    

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69. ԿނɺϨϏϡʔͷॻ͖ํΛ
    ҙࣝ͢Δඞཁ͕͋Δͷ͔ʁ
    

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70. ࠔͬͨ͜ͱ͸ʁ
    ઌഐ͕ාͯ͘ࢥͬͨ͜ͱ͕ॻ͚ͳ͍
    ࣗ෼͸ྗྔແ͍ͷʹͦΜͳϨϏϡʔ
    ͰҒͦ͏ͳ͜ͱݴ͍͍ͬͯͷ͔
    

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71. ਓ͕͍ؒΔͱ΄΅࣮֬ʹਓؒؔ܎ͷ໰
    ୊͸ग़ͯ͘Δɻ
    ਓؒؔ܎ͷ໰୊͸ɺޡղ͔Β࢝·Δ͜
    ͱ͕ଟ͍ͱ๻͸ࢥ͍ͬͯΔɻ
    إΛ߹ΘͤͣʹߦΘΕΔίʔυϨϏϡʔ
    ͸ɺͦͷޡղΛੜΈग़͢৔ॴʹͳΔՄ
    ೳੑ͕͋Δͱ΋ࢥ͍ͬͯͯɺϨϏϡʔ
    ͷॻ͖ํΛؾΛ͚ͭΔ͜ͱͰɺͦ͏͍ͬ
    ͨޡղΛੜ·ΕΔͷΛগͳ͘͢Δ΂͖ɻ
    

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72. ਓؒؔ܎Ͱ೰Έͨ͘ͳ͍ͷͰɺ
    ޡղ͞Εͳ͍Α͏ʹ͢Δɻ
    

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73. ఻͑ํΛஸೡʹ͢Δ
    

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74. ཧ༝Λॻ͘
    

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75. ཧ༝Λॻ͘
    ʮ΄͛΄͛ɺΑ͘ͳ͍ؾ͕͠·͢ʯ
    ʮ΄͛΄͛͸"ͳͷͰɺΑ͘ͳ͍ؾ
    ͕͠·͢ʯ
    

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76. ๙ΊΔ
    

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77. ๙ΊΔ
    ʮ΄͛΄͛͸"ͳͷͰɺΑ͘ͳ͍ؾ
    ͕͠·͢ʯ
    ʮ͜ͷίʔυՄѪ͍ΜͰ͕͢ɺ΄͛
    ΄͛͸"ͳͷͰɺΑ͘ͳ͍ؾ͕͠·
    ͢ʯ
    

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78. ఏҊ͢Δ
    

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79. ఏҊ͢Δ
    ʮ΄͛΄͛͸"ͳͷͰɺΑ͘ͳ͍ؾ
    ͕͠·͢ʯ
    ʮ΄͛΄͛͸"ͳͷͰɺΑ͘ͳ͍ؾ
    ͕͠·͢ɻ;͕;͕ͷํ͕͍͍ͱ
    ࢥͬͨΜͰ͕͢ɺͲ͏Ͱ͠ΐ͏ʯ
    

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80. ఏҊʹ΋ཧ༝Λॻ͘
    

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81. ఏҊʹ΋ཧ༝Λॻ͘
    ʮ΄͛΄͛͸"ͳͷͰɺΑ͘ͳ͍ؾ͕͠
    ·͢ɻ;͕;͕ͷํ͕͍͍ͱࢥͬͨΜͰ
    ͕͢ɺͲ͏Ͱ͠ΐ͏ʯ
    ʮ΄͛΄͛͸"ͳͷͰɺΑ͘ͳ͍ؾ͕͠
    ·͢ɻ;͕;͕ͷํ͕ղফ͞Εɺ͔ͭ#ͳ
    ͷͰྑ͍ͱࢥͬͨΜͰ͕͢ɺͲ͏Ͱ͠ΐ
    ͏ʯ
    

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82. ͳΜͳΒ
    ίʔυͰࣔ͢
    

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83. ͳΜͳΒίʔυͰࣔ͢
    ʮ΄͛΄͛͸"ͳͷͰɺΑ͘ͳ͍ؾ͕͠·
    ͢ɻ;͕;͕ͷํ͕ղফ͞Εɺ͔ͭ#ͳͷ
    Ͱྑ͍ͱࢥͬͨΜͰ͕͢ɺͲ͏Ͱ͠ΐ͏ʯ
    ʮ΄͛΄͛͸"ͳͷͰɺΑ͘ͳ͍ؾ͕͠·
    ͢ɻ;͕;͕ͷํ͕ղফ͞Εɺ͔ͭ#ͳͷ
    Ͱྑ͍ͱࢥͬͨΜͰ͕͢ɺͲ͏Ͱ͠ΐ͏ʁ
    ͜͏͍͏ײ͡Ͱ͢ʯ
    

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84. ╹◡╹
    ŷţƄţŝƄƂƁŦʙ
    

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85. େৎ෉ʂʂʂʂʂʂ
    ஈ֊͕͋Δʂʂʂʂ
    

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86. ͜ͷ࿩͸ɺ͖ͬ͞࿩ͨ͠Ϩϕϧ͕ग़དྷ
    Δਓୡ͕΍Δ΂͖͜ͱɻ
    ୭ʹͰ΋ग़དྷΔɺ؆୯ͳ΋ͷ͕͋Δʂʂʂ
    

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87. σδλϧจࣈʹ͸
    ײ৘͕͜΋Γʹ͍͘
    ͱ͍͏࿩
    

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88. ର໘Ͱ࿩͍ͯ͠Δͱإ͕ݟ͑Δɻ
    ද৘͕Θ͔Δ
    ޡղʹܨ͕Γʹ͍͘
    

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