エンジニアとしてこの先生きのこるために

2019年度リクルート新人ブートキャンプ エンジニアコースの講義資料です

Transcript

1. ΤϯδχΞͱͯ͠
   ͜ͷઌੜ͖ͷ͜ΔͨΊʹ
   ࿨ా୎ਓ
   "QS !ϦΫϧʔτςΫϊϩδʔζ
   

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2. UXBEB
   U@XBEB
   UXBEB
   ࿨ా୎ਓ
   

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3. ؂मɺ؂༁ɺ຋༁ͨ͠ຊͨͪ
   

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4. テスト書いてますか！！
   ελϯυ໊ϫΠϧυɾαόϯφ
   

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5. assert(typeof item.id === 'strong')
   | | | |
   | | | false
   | | "foo"
   | Item{id:"foo",name:"bar"}
   "string"
   --- [string] 'strong'
   +++ [string] typeof item.id
   @@ -1,6 +1,6 @@
   str
   -o
   +i
   ng
   power-assert
   IUUQTHJUIVCDPNQPXFSBTTFSUKTQPXFSBTTFSU
   

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6. wେֶࡏֶத͔ΒઃܭͱϓϩάϥϛϯάͷΞϧόΠτ
   Λ࢝ΊΔ
   wଔۀޙϓϩάϥϚͱͯ͠ͷΩϟϦΞΛ։࢝
   wిࢠ੓෎ͷαϒϓϩδΣΫτ ਺ઍਓن໛
   ͰϦʔυ
   ϓϩάϥϚ
   w91ͷίʔνͱͯ͠ਓͷΞδϟΠϧνʔϜʹࢀՃ
   wߨԋɺࣥචɺ044׆ಈΛ࢝ΊΔ
   wݱࡏ͸ʮྲྀ͠ͷϖΞϓϩۀʯΛߦ͍ͬͯΔ
   ΩϟϦΞతͳ΋ͷ
   

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7. ΑΖ͓͘͠ئ͍͠·͢
   

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9. ֶͼଓ͚Δ࢟੎
   

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10. lৗʹ͋ͳͨͷ
    ஌ࣝϙʔτϑΥϦΦ
    ʹ౤ࢿ͢Δ͜ͱz
    

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11. ٕज़ΛֶͿͷͰ
    ͸ͳ͘ɺٕज़ͷ
    ֶͼํΛֶͿ
    

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12. Agenda
    ֶͼํΛֶͿ
    ݱ໾ϓϩάϥϚͰ͍ΔͨΊʹ
    ͓ΘΓʹ
    
    

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13. ࢛൒ظຖʹٕज़ॻΛಡΉ
    खΛಈֶ͔ͯ͠Ϳ
    ຖ೥গͳ͘ͱ΋ͭͷݴޠΛֶश͢Δ
    ਎ͷճΓΛϓϩάϥϛϯάର৅ʹ͢Δ
    Ξ΢τϓοτΛߦ͏
    
    

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14. l࢛൒ظຖʹ
    ٕज़ॻΛಡΉz
    

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15. View Slide

16. 感覚記憶
    0.5 〜 2sec
    短期記憶
    15 〜 30 sec
    長期記憶
    死ぬまで?
    ֶͼͷ࢓૊Έ
    

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17. ೴಺ΠϯσοΫεΛ࡞Δ
    ピッカーを育てる = 反復練習
    何度も長期記憶から出し入れする
    荷物を他の荷物とくっつける
    連想記憶を育てる
    

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18. 1999 2000 2001 2002 2003 2004 2005 2006
    ͨͱ͑͹ɺ࣌ܥྻʹฒ΂Δ
    

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19. ࢛൒ظຖʹٕज़ॻΛಡΉ
    खΛಈֶ͔ͯ͠Ϳ
    ຖ೥গͳ͘ͱ΋ͭͷݴޠΛֶश͢Δ
    ਎ͷճΓΛϓϩάϥϛϯάର৅ʹ͢Δ
    Ξ΢τϓοτΛߦ͏
    
    

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20. lखΛಈ͔͠
    ֶͯͿz
    

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21. Ͱ͖Δ
    ޷͖ʹͳΔ
    ΍Δ
    

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22. σʔϧͷԁਲ਼
    

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23. ࣸܦ
    

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24. IUUQUXJUUFSDPNU@XBEBTUBUVTFT
    

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25. ࢛൒ظຖʹٕज़ॻΛಡΉ
    खΛಈֶ͔ͯ͠Ϳ
    ຖ೥গͳ͘ͱ΋ͭͷݴޠΛֶश͢Δ
    ਎ͷճΓΛϓϩάϥϛϯάର৅ʹ͢Δ
    Ξ΢τϓοτΛߦ͏
    
    

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26. lຖ೥গͳ͘ͱ΋
    ҰͭͷݴޠΛ
    ֶश͢Δz
    

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27. http://www.thoughtworks.com/radar/languages-and-frameworks
    

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28. http://www.thoughtworks.com/radar/languages-and-frameworks
    

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29. http://www.thoughtworks.com/radar/languages-and-frameworks
    

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30. http://www.thoughtworks.com/radar/languages-and-frameworks
    

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31. lӳޠ͕Ͱ͖ΔΑ͏ʹͳΔͱ͍͏ͷ͸ɺ
    ʮେ͖ͳਤॻؗͷݤʯΛ౉͞ΕΔΑ͏ͳ
    ΋ͷͰ͢ɻҰਓͻͱΓͷਓੜʹ͍ΖΜͳ
    ՄೳੑΛ༩͑ͯ͘Ε·͢z
    ŠŠߴদचࢠ
    http://blogos.com/article/85541/
    ٕज़ऀͱӳޠʹ͍ͭͯ
    

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32. ࢛൒ظຖʹٕज़ॻΛಡΉ
    खΛಈֶ͔ͯ͠Ϳ
    ຖ೥গͳ͘ͱ΋ͭͷݴޠΛֶश͢Δ
    ਎ͷճΓΛϓϩάϥϛϯάର৅ʹ͢Δ
    Ξ΢τϓοτΛߦ͏
    
    

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33. ਎ͷճΓΛ
    ϓϩάϥϛϯά
    ର৅ʹ͢Δ
    

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34. ϓϩάϥϚ޲͚ͷຊͷ؂मऀ͸
    Ͳ͏͋Δ΂͖͔
    

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35. ϓϩάϥϚΒ͘͠
    ଵଦɺၗຫɺ୹ؾ
    ϓϨʔϯςΩετΛ޷Ή
    ͢΂ͯΛόʔδϣϯ؅ཧ͢Δ
    ͢΂ͯΛࣗಈԽ͢Δ
    มԽΛ๊༴͢Δ
    

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36. ϓϩάϥϚΒ͘͠
    ݪߘ͸NBSLEPXOܗࣜ
    ݪจ͸εΫϨΠϐϯάͯ͠औಘ
    HJUΛ࢖͍όʔδϣϯ؅ཧ
    IFSPLVʹQVTIͯ͠αΠτʹ൓ө
    ؂मࠩ෼͸EPDEJGGͰදࣔ
    

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37. View Slide

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39. ࠷ۙͭͬͨ͘΋ͷ
    ࢠҭͯ΍ڭҭؔ܎ͷ
    -*/&#PU
    "NB[PO"MFYB4LJMM
    ͳͲͳͲ
    

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40. ࢛൒ظຖʹٕज़ॻΛಡΉ
    खΛಈֶ͔ͯ͠Ϳ
    ຖ೥গͳ͘ͱ΋ͭͷݴޠΛֶश͢Δ
    ਎ͷճΓΛϓϩάϥϛϯάର৅ʹ͢Δ
    Ξ΢τϓοτΛߦ͏
    
    

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41. Ξ΢τϓο
    τΛߦ͏
    

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42. σʔϧͷԁਲ਼
    

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43. https://twitter.com/ProfFeynman/status/981943455508148225
    

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44. Πϯϓοτ
    Ξ΢τϓοτ
    ਖ਼ͷϑΟʔυόοΫϧʔϓ
    

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45. ྔ͸࣭ʹసԽ͢Δ
    http://d.hatena.ne.jp/KZR/20080808/p1
    

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46. CMPHΛॻ͘
    

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47. l৘ใൃ৴ɺCMPH ൃ
    ද ެ։ͳͲ͸ɺ਺ֶͷ
    ະղܾ໰୊ͷ
    ূ໌Ͱ
    ͸ͳ͘ɺྉཧͷΑ͏ͳ
    ΋ͷz
    

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48. ࣥච͢Δ ·ͣ͸ࡶࢽ͔Β
    
    

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49. HJIZPKQͷ࿈ࡌ
    ʰʦಈըͰղઆʧ࿨ా୎ਓͷlςετۦಈ։ൃzߨ࠲ʱ
    IUUQHJIZPKQEFWTFSJBMUEE
    શճ͢΂ͯಈը෇͖ղઆ
    χίχίಈըͰ΋ݟΕ·͢
    8%#աڈهࣄͷಛઃαΠτͱಈը΋
    

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50. ίʔυΛެ։͢Δ
    

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51. assert(typeof item.id === 'strong')
    | | | |
    | | | false
    | | "foo"
    | Item{id:"foo",name:"bar"}
    "string"
    --- [string] 'strong'
    +++ [string] typeof item.id
    @@ -1,6 +1,6 @@
    str
    -o
    +i
    ng
    power-assert
    IUUQTHJUIVCDPNQPXFSBTTFSUKTQPXFSBTTFSU
    

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52. power-assert
    

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53. power-assert
    

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54. ߨԋ͢Δ
    

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55. Ͱ͖Ε͹ϥΠϒίʔσΟϯάͰ
    

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56. w5XJUUFS
    wCMPH 2JJUB౳
    wࡶࢽهࣄ 8FC ࢴഔମ ిࢠഔମ
    
    wॻ੶ ڞஶ ຋༁ ؂༁ ୯ஶ
    
    wߨԋ ࣾ಺ษڧձ ࣾ֎-5 ࣾ֎ߨԋ
    
    wϥΠϒίʔσΟϯά
    w(JUIVC
    Ξ΢τϓοτͷνϟωϧ
    

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57. JOUFSWBM
    

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58. Agenda
    ֶͼํΛֶͿ
    ݱ໾ϓϩάϥϚͰ͍ΔͨΊʹ
    ͓ΘΓʹ
    
    

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59. ຖ೔ίʔυΛॻ͘
    ೥Լ͔ΒֶͿ
    աڈ͔ΒະདྷΛݟΔ
    ਓͷͭ͘ΔӔΛݟΔ
    େࣄͳ͜ͱʹूத͢Δ
    
    

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60. ຖ೔ίʔυΛ
    ॻ͘
    

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61. w K2VFSZ࡞ऀ+PIO3FTJH͸ि຤ʹࣗ෼ͷϓϩ
    μΫτ։ൃΛؤுΖ͏ͱ͕ͨ͠ɺࣦഊɻ
    w ฏ೔ͱಉ͡അྗͰ͸ॻ͚ͳ͍
    w શͯͷि຤͕ۭ͍͍ͯΔΘ͚Ͱ͸ͳ͍
    w Ұिؒ ͋Δ͍͸ೋिؒ
    ͸௕͍ɻίʔυ
    Λ๨Εͯ͠·͏
    w ͦ͜Ͱ+PIO3FTJH͕ߦͬͨ͜ͱ͸ʜʜ
    ͋ͷ+PIO3FTJHͰ΋͏·͍͔͘ͳ͍͜ͱ
    

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62. IUUQFKPIOPSHCMPHXSJUFDPEFFWFSZEBZ
    

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63. ຖ೔ίʔυΛॻ͘͜ͱɻϒϩάɺυΩϡϝϯ
    τɺͦͷଞ͸ίʔυΛॻ͍ͨΒ΍ͬͯΑ͍ɻ
    ҙຯͷ͋ΔίʔυΛॻ͘͜ͱɻΠϯσϯτ
    ΍ϑΥʔϚοτͷमਖ਼ɺՄೳͳΒ͹ϦϑΝΫ
    λϦϯά΋ίʔυॻ͖ʹ͸Χ΢ϯτ͠ͳ͍ɻ
    ਂ໷࣌લʹऴΘΒͤΔ͜ͱɻ
    ॻ͍ͨίʔυΛHJUIVCͰશͯ044ʹ͢Δ
    ͜ͱɻ
    ࢛ͭͷϧʔϧ
    IUUQFKPIOPSHCMPHXSJUFDPEFFWFSZEBZ
    

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64. ౰࣌ͷ
    !KFSFTJHͷHJUIVCQSPpMF
    IUUQTHJUIVCDPNKFSFTJH
    

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65. w ඞཁ࠷খݶͷίʔυ΁ͷूதҰ೔෼ʙ࣌ؒఔ౓Ͱҙ
    ຯͷ͋ΔίʔυΛॻ͘͜ͱ͕ڧ͍ΒΕΔ ٳ೔ʹ͸΋ͬͱ
    ͔͚ΒΕΔ
    
    w ϓϩάϥϛϯάͷश׳ԽHJUIVCʹ૲Λੜ΍͢ͷ͕໨తͰ
    ͸ͳ͍ɻࣗ෼Ͱࣗ෼ࣗ਎ͷͨΊʹੜ׆श׳Λม͑Δͷ͕େ
    ࣄ
    w ෆ҆ͱͷઓ͍Ҏલ͸ʮे෼ʹʯਐΜͰ͍Δ͔ɺʮे෼
    ʹʯ׬੒͍ͯ͠Δ͔ɺෆ͕҆͋ͬͨɻຖ೔ίʔυΛॻ͍ͯ
    ΈͯɺਐΜͰ͍Δͱ͍͏࣮ײ͸ɺ࣮ࡍͷਐḿͱಉ͘͡Β͍
    ॏཁͩͱ͍͏ؾ͖ͮΛಘͨ
    +PIO3FTJHʹىͬͨ͜มԽ
    
    

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66. w ि຤ͷա͔ͨ͝͠Ҏલ͸։ൃͷશͯΛि຤ʹṌ͚ࣦͯ
    ഊ͍͕ͯͨ͠ɺ͍·΍ि຤͸ͦΕ΄ͲॏཁͰͳ͘ͳΓɺ
    ϦΞϧϥΠϑΛॆ࣮Ͱ͖ΔΑ͏ʹͳͬͨ
    w όοΫάϥ΢ϯυॲཧࢄาதɺγϟϫʔதɺৗʹίʔ
    υͷ͜ͱΛόοΫάϥ΢ϯυͰߟ͑ΔΑ͏ʹͳΓɺྑ
    ͍ΞΠσΞ͕ු͔ͿΑ͏ʹͳͬͨ
    w ίϯςΫετεΠονҎલ͸िʹҰճͷ։ൃͩͬͨͷ
    ͰίϯςΫετεΠονͷίετ͕͕͋ͬͨɺ͍·͸
    ຖ೔ͳͷͰͦΕ͕ͳ͍
    +PIO3FTJHʹىͬͨ͜มԽ
    
    

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67. w ϫʔΫϥΠϑόϥϯε࢓ࣄੜ׆ࣗ෼ͷϓϩδΣΫτ
    ͷόϥϯεͷऔΓํ͕෼͔ͬͨͷ͕࠷େͷऩ֭ͩͬͨɻ
    ຖ೔΍Δͱ͍͏͜ͱ͸ɺόϥϯεΛऔΔͱ͍͏͜ͱ
    w ·ΘΓ͔Βͷཧղʮຖ೔ίʔυΛॻ͘ʯͱ͍͏श׳Λ
    ެݴͨ͜͠ͱͰɺύʔτφʔ͔Βͷཧղ΋ಘΒΕΔΑ
    ͏ʹͳͬͨ
    w ͲΕ͚ͩίʔυΛॻ͍͔ͨ͜ͷश׳Λଓ͚Δͱॻ͘
    ίʔυ΍Ξ΢τϓοτ͸ࣗ෼Ͱ΋֮͑ΒΕͳ͍͘Β͍
    ͷྔʹͳΓɺॆ࣮ײΛಘΒΕΔ
    +PIO3FTJHʹىͬͨ͜มԽ
    
    

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68. ݱࡏͷ!KFSFTJHͷHJUIVCQSPpMF
    IUUQTHJUIVCDPNKFSFTJH
    

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69. ࢲ΋݁ߏଓ͚·ͨ͠
    

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70. ࣄྫ
    

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71. ॅΉ৔ॴΛ޻෉͢Δ
    

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72. ҙਤతʹΦϑϥΠϯ࣌ؒΛͭ͘Δ
    

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73. ຖ೔ίʔυΛॻ͘
    ೥Լ͔ΒֶͿ
    աڈ͔ΒະདྷΛݟΔ
    ਓͷͭ͘ΔӔΛݟΔ
    େࣄͳ͜ͱʹूத͢Δ
    
    

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74. ೥Լ͔Β
    ֶͿ
    

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75. lҰੜϓϩάϥϚʔͰ͍
    ΕΔ͔Ͳ͏͔͸ɺݴ͍
    ׵͑Ε͹೥Լ͔Βֶ΂
    Δ͔൱͔ɻz
    

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76. Ͱ͖Δ
    ޷͖ʹͳΔ
    ա৒ద߹ͱλίπϘԽ
    

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77. wఆظతʹࣗ෼ͷεΩϧΛ୨Է͢͠Δ
    wੵۃతʹ֎෦ʹग़ͯɺࣗ෼ͷεΩϧΛ
    ૬ରԽ͢Δ
    w࢖͏ಓ۩Λఆظతʹม͑Δ
    wະ஌ͷίϛϡχςΟʹࢀՃ͢Δ
    wएऀ͔ΒֶͿ
    wएऀͱಉ͡౔ඨͰڝ͏
    ϕϯνϚʔΫͱΞϯϥʔχϯά
    

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78. ペアプログラミング
    ベテランにはアンラーニングのチャンス
    

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79. ຖ೔ίʔυΛॻ͘
    ೥Լ͔ΒֶͿ
    աڈ͔ΒະདྷΛݟΔ
    ਓͷͭ͘ΔӔΛݟΔ
    େࣄͳ͜ͱʹूத͢Δ
    
    

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80. աڈ͔Β
    ະདྷΛ஌Δ
    

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81. ٕज़͸ʮৼΓࢠʯ
    

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82. ٕज़͸ʮΒͤΜʯ
    

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83. IUUQTTQFBLFSEFDLDPNUXBEBVOEFSTUBOEJOHUIFTQJSBMPGUFDIOPMPHJFT
    

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84. IUUQXXXQVCMJDLFZKQCMPHIUNM
    

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85. ʮ5ࣈܕʯͰ͸ͳ͘ෳ਺ͷபΛ
    

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86. ຖ೔ίʔυΛॻ͘
    ೥Լ͔ΒֶͿ
    աڈ͔ΒະདྷΛݟΔ
    ਓͷͭ͘ΔӔΛݟΔ
    େࣄͳ͜ͱʹूத͢Δ
    
    

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87. ਓͷͭ͘Δ
    ӔΛݟΔ
    

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88. ૊৫ͷ࣌୅͔Βݸਓͷ࣌୅΁
    

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89. ݸ͕ଟ͘ू·ΔͱԿ͔͕ى͜Δ
    

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90. ϩʔυϚοϓࢦ޲͔ΒΤίγεςϜࢦ޲΁
    

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91. IUUQEIBUFOBOFKQFTTBQ
    

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92. l͔͠͠ɺࠓͷۀք͸ɺʮΤίγεςϜʯͷ࣌୅ͩɻ
    ೤ଳӍྛͷΑ͏ʹɺ৯͍͍͋ͭͭڞੜ͋͠͏͞·͟ͳ
    λΠϓͷϓϨΠϠʔ͕ɺࣗ෼ͷҝ͚ͩͷݸผͷҙࢥܾ
    ఆΛͯ͠ɺͦͷ૬ޓ࡞༻Ͱٕज़͕ൃల͍ͯ͘͠ɻʮΤ
    ίγεςϜʯ͸ໃ६ͩΒ͚Ͱɺ͋Δٕज़͕ൃల͢Δͷ
    ͱಉ࣌ʹɺͦͷΞϯνςʔθͱͳΔٕज़΋৳ͼΔz
    lʮϩʔυϚοϓʯ͕ࢦࣔ͢͠ະདྷͷํ޲ͱҧ͏ํ޲
    ʹਐΉ͜ͱ͸க໋తͳؒҧ͍͕ͩɺʮΤίγεςϜʯ
    ͸Ή͠Ζத৺෦͕ϨουΦʔγϟϯͰɺपล෦ʹੜ͖
    ࢒Γ͕༰қͳϒϧʔΦʔγϟϯ͕͋Δz
    IUUQEIBUFOBOFKQFTTBQ
    

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93. lී௨ͷਓ͸ʮϩʔυϚοϓʯ
    ͷதͰ͸ਅΜதΛਐΉ΂͖Ͱɺ
    ʮΤίγεςϜʯͷதͰ͸ਅΜ
    தΛආ͚Δ΂͖ͩz
    IUUQEIBUFOBOFKQFTTBQ
    

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