Goのソースコードから読み解くオブジェクト指向プログラミング@Object-Oriented Conference 2020

Transcript

1. 0CKFDU0SJFOUFE$POGFSFODF
   !͓஡ͷਫঁࢠେֶڞ
   (Pͷιʔείʔυ͔ΒಡΈղ͘
   ΦϒδΣΫτࢦ޲ϓϩάϥϛϯά
   BETIPMPLP BETIPMPLP
   

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2. ࣗݾ঺հ
   4IPHP"SBLBXB
   J04&OHJOFFS
   !4BOTBO
   BETIPMPLP BETIPMPLP
   

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3. ࠓ೔࿩͢͜ͱ
   w (Pͷιʔείʔυͷઃܭ͔ΒΦϒδΣΫτࢦ޲ͷΤοηϯεΛֶ΅͏
   w ΦϒδΣΫτࢦ޲ͷҰ୺Ͱ͋ΔσβΠϯύλʔϯʹ͍ͭͯ࿩͠·͢
   ϘτϜΞοϓͰΦϒδΣΫτࢦ޲ͷਅ਷ΛֶͿ
   

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4. (Pʹ͍ͭͯ
   w (PPHMF͕։ൃͨ͠ݴޠ
   w ೥݄ʹॳϦϦʔε
   w 3PC1JLFɺ,FO5PNQTPOʢݩ6/*9
   ։ൃऀʣΒ͕ॳظઃܭͨ͠੩తܕ෇͚ݴޠ
   w ͭ·Γ6/*9ͷΤοηϯε͕٧·͍ͬͯΔ
   

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5. ͦ΋ͦ΋ʜ
   (P͸ΦϒδΣΫτࢦ޲ݴޠ͔ʁ
   

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6. (P͸ΦϒδΣΫτࢦ޲ݴޠʁ
   https://golang.org/doc/faq
   

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7. (P͸ΦϒδΣΫτࢦ޲ݴޠʁ
   https://golang.org/doc/faq
   

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8. l:FTBOEOP"MUIPVHI(PIBTUZQFTBOENFUIPETBOE
   BMMPXTBOPCKFDUPSJFOUFETUZMFPGQSPHSBNNJOH UIFSF
   JTOPUZQFIJFSBSDIZ5IFDPODFQUPGlJOUFSGBDFzJO(P
   QSPWJEFTBEJGGFSFOUBQQSPBDIUIBUXFCFMJFWFJTFBTZ
   UPVTFBOEJOTPNFXBZTNPSFHFOFSBM5IFSFBSFBMTP
   XBZTUPFNCFEUZQFTJOPUIFSUZQFTUPQSPWJEF
   TPNFUIJOHBOBMPHPVTŠCVUOPUJEFOUJDBMŠUP
   TVCDMBTTJOH.PSFPWFS NFUIPETJO(PBSFNPSF
   HFOFSBMUIBOJO$PS+BWBz
   *T(PBOPCKFDUPSJFOUFEMBOHVBHF
   

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9. l:FTBOEOP"MUIPVHI(PIBTUZQFTBOENFUIPETBOE
   BMMPXTBOPCKFDUPSJFOUFETUZMFPGQSPHSBNNJOH UIFSF
   JTOPUZQFIJFSBSDIZ5IFDPODFQUPGlJOUFSGBDFzJO(P
   QSPWJEFTBEJGGFSFOUBQQSPBDIUIBUXFCFMJFWFJTFBTZ
   UPVTFBOEJOTPNFXBZTNPSFHFOFSBM5IFSFBSFBMTP
   XBZTUPFNCFEUZQFTJOPUIFSUZQFTUPQSPWJEF
   TPNFUIJOHBOBMPHPVTŠCVUOPUJEFOUJDBMŠUP
   TVCDMBTTJOH.PSFPWFS NFUIPETJO(PBSFNPSF
   HFOFSBMUIBOJO$PS+BWBz
   *T(PBOPCKFDUPSJFOUFEMBOHVBHF
   

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10. w ಡΈࠐΈॲཧΛಁաతʹѻ͏ͨΊͷ3FBEFSʢඪ४ϥΠϒϥϦΑΓʣ
    w ໦૸ࠪΛݡ͘ಁաతʹѻ͏ͨΊͷ7JTJUPSʢݴޠॲཧܥΑΓʣ
    ࠓճ঺հ͢Δύλʔϯ
    

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11. w ಡΈࠐΈॲཧΛಁաతʹѻ͏ͨΊͷ3FBEFSʢඪ४ϥΠϒϥϦΑΓʣ
    w ໦૸ࠪΛݡ͘ಁաతʹѻ͏ͨΊͷ7JTJUPSʢݴޠॲཧܥΑΓʣ
    ࠓճ঺հ͢Δύλʔϯ
    

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12. JP3FBEFSΠϯλʔϑΣʔε
    

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13. JP3FBEFSΠϯλʔϑΣʔε
    Ҿ਺ ໭Γ஋
    

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14. ྫϑΝΠϧಡΈࠐΈͷྫ
    

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15. 3FBEFSΠϯλʔϑΣʔε
    ଞʹ΋ͨ͘͞Μ͋ΔΑʂ
    JOUFSGBDF
    JP3FBEFS
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    CVpP3FBEFS
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    PT'JMF
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    OFU*1$POO
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    

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16. ϑΝΠϧ͔ΒಡΈࠐΈΛ࣮ݱ͢Δ3FBEFS
    3FBEFSΠϯλʔϑΣʔε
    JOUFSGBDF
    JP3FBEFS
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    CVpP3FBEFS
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    PT'JMF
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    OFU*1$POO
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    

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17. 3FBEFSΠϯλʔϑΣʔε
    JOUFSGBDF
    JP3FBEFS
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    CVpP3FBEFS
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    PT'JMF
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    OFU*1$POO
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    όοϑΝ͔ΒಡΈࠐΈΛ࣮ݱ͢Δ3FBEFS
    

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18. 3FBEFSΠϯλʔϑΣʔε
    *1ίωΫγϣϯ͔ΒಡΈࠐΈΛ࣮ݱ͢Δ3FBEFS
    JOUFSGBDF
    JP3FBEFS
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    CVpP3FBEFS
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    PT'JMF
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    OFU*1$POO
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    

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19. 3FBEFSΠϯλʔϑΣʔε
    JOUFSGBDF
    JP3FBEFS
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    CVpP3FBEFS
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    PT'JMF
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    OFU*1$POO
    3FBE Q<>CZUF
    OJOU FSSFSSPS
    
    ʮYYY͔ΒಡΈࠐΉʯ͜ͱ͕ڞ௨͍ͯ͠Δ
    

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20. ྫόοϑΝϦϯά͋ΓϑΝΠϧಡΈࠐΈ
    ˞্ه͸JPVUJM3FBE'JMFͱ͍͏ศརϝιουͰ΋୅ସՄೳ
    ʢόοϑΝ֬อͷαΠζ͸ҟͳΔʣ
    

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21. 3FBEFSΛ૊Έ߹ΘͤΔ
    CVpP3FBEFS
    JOUFSGBDF
    JP3FBEFS
    JOUFSGBDF
    JP3FBEFS
    PT'JMF
    

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22. ୯७Խ͢Δͱʜ
    JOUFSGBDF
    JP3FBEFS
    CVpP3FBEFS PT'JMF
    CVpP3FBEFS͕JP3FBEFSΛϥοϓͰ͖Δߏ଄
    

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23. w JP3FBEFSΛϑΟʔϧυʹ࣋ͭ
    w ϑΟʔϧυʹ୅ೖ͞Ε͍ͯΔ۩৅Ϋ
    ϥεʹ͸Ұ੾ؔ༩͠ͳ͍
    CVpPHP
    CVpP3FBEFS
    

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24. ϑΝΠϧʹͯ͠΋
    3FBEFS͑͞ܧঝ͍ͯ͠Ε͹
    ԿͰ΋ࠩ͠ସ͑ΒΕΔ
    CVpP3FBEFS
    JOUFSGBDF
    JP3FBEFS
    JOUFSGBDF
    JP3FBEFS
    PT'JMF
    

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25. ίωΫγϣϯʹͯ͠΋
    3FBEFS͑͞ܧঝ͍ͯ͠Ε͹
    ԿͰ΋ࠩ͠ସ͑ΒΕΔ
    CVpP3FBEFS
    JOUFSGBDF
    JP3FBEFS
    JOUFSGBDF
    JP3FBEFS
    OFU*1$POO
    

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26. ࣗ࡞3FBEFSʹͯ͠΋
    3FBEFS͑͞ܧঝ͍ͯ͠Ε͹
    ԿͰ΋ࠩ͠ସ͑ΒΕΔ
    CVpP3FBEFS
    JOUFSGBDF
    JP3FBEFS
    JOUFSGBDF
    JP3FBEFS
    ࣗ࡞3FBEFS
    

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27. "UPVSPG(P305
    

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28. JP3FBEFSͷԿ͕خ͍͔͠ʁ
    w ݺͼग़͠ݩ͔Β͢Ε͹ಡΈग़͠ݩͷιʔεΛҰ੾ҙࣝͤͣʹ͢Ή
    w JP3FBEFSʹ४ڌ͢Δͱಁաతʹ༷ʑͳػೳΛ֦ு͢Δ͜ͱ͕ग़དྷΔ
    w FH
    όοϑΝ͋Γ ϑΝΠϧιέοτ૊Έ߹Θͤ͸ແݶେʂ
    ˞(P'ͷσβΠϯύλʔϯͰݴ͑͹$PNQPTJUF4UBSBUFHZύλʔϯʹ͍͔ۙ΋
    

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29. w ಡΈࠐΈॲཧΛಁաతʹѻ͏ͨΊͷ3FBEFSʢඪ४ϥΠϒϥϦΑΓʣ
    w ໦૸ࠪΛݡ͘ಁաతʹѻ͏ͨΊͷ7JTJUPSʢݴޠॲཧܥΑΓʣ
    ࠓճ঺հ͢Δύλʔϯ
    

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30. ίϯύΠϥͷಈ͖
    ιʔείʔυ
    ࣈ۟ղੳ
    ߏจղੳ
    ҙຯղੳ
    ࠷దԽ
    ࣮ߦϑΝΠϧग़ྗ
    ˞࣮ࡍ͸΋͏গ͠ෳࡶͰ͢
    

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31. ίϯύΠϥͷಈ͖
    ̑
    
    ιʔείʔυ
    ࣈ۟ղੳ
    ߏจղੳ
    ҙຯղੳ
    ࠷దԽ
    ࣮ߦϑΝΠϧग़ྗ
    <̑
    >
    

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32. ίϯύΠϥͷಈ͖
    ιʔείʔυ
    ࣈ۟ղੳ
    ߏจղੳ
    ҙຯղੳ
    ࠷దԽ
    ࣮ߦϑΝΠϧग़ྗ
    <̑
    >
    
    
    
    
    ˎ
    

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33. ίϯύΠϥͷಈ͖
    ιʔείʔυ
    ࣈ۟ղੳ
    ߏจղੳ
    ҙຯղੳ
    ࠷దԽ
    ࣮ߦϑΝΠϧग़ྗ
    
    
    
    
    ˎ
    ׂѪ
    

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34. ໦ߏ଄Λ८ճ͍ͨ͠
    
    
    
    
    ˎ
    ໦Λ͍͍ײ͡ʹ८ճͭͭ͠ɺͦͷϊʔυʹैͬͨॲཧΛ͍ͨ͠
    

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35. ໦ߏ଄Λ८ճ͍ͨ͠
    w 7JTJUPS͸໦Λ८ճ͢Δ
    w /PEF͸֤અ఺Λදݱ͢Δ
    w &YQS͸/PEFΛ֦ுͨ͠Πϯ
    λʔϑΣʔε
    BTUXBMLHP
    BTUBTUHP
    

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36. /PEFͷछྨͨͪ
    
    
    ˎ
    
    
    /PEF
    

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37. /PEFͷछྨͨͪ
    
    
    ˎ
    
    
    &YQS
    

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38. /PEFͷछྨͨͪ
    JOUFSGBDF
    /PEF
    JOUFSGBDF
    &YQS
    JOUFSGBDF
    %FDM
    #BTJD-JU
    FH
    ੔਺Ϧςϥϧ
    #JOBSZ&YQS
    FH
    ೋ߲ԋࢉࢠ
    *EFOU
    FH
    ม਺
    ʜ
    JOUFSGBDF
    4UNU
    

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39. /PEFͷछྨͨͪ
    
    
    ˎ
    
    
    #JOBSZ&YQS
    #BTJD-JU
    

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40. #BTJD-JU
    

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41. #JOBSZ&YQS
    

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42. ८ճ 8BML
    ͷಈ͖
    
    
    
    
    ˎ 7JTJUPS
    

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43. ८ճ 8BML
    ͷಈ͖
    
    
    
    
    ˎ 7JTJUPS
    

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44. ८ճ 8BML
    ͷಈ͖
    
    
    
    
    ˎ 7JTJUPS
    

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45. ८ճ 8BML
    ͷಈ͖
    
    
    
    
    ˎ 7JTJUPS
    9 :
    

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46. ८ճ 8BML
    ͷಈ͖
    
    
    
    
    ˎ
    7JTJUPS
    9 :
    

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47. ८ճ 8BML
    ͷಈ͖
    
    
    
    
    ˎ
    7JTJUPS
    

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48. ८ճ 8BML
    ͷಈ͖
    
    
    
    
    ˎ
    7JTJUPS
    9 :
    

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49. ८ճ 8BML
    ͷಈ͖
    
    
    
    
    ˎ
    7JTJUPS
    

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50. ८ճ 8BML
    ͷಈ͖
    
    
    
    
    ˎ 7JTJUPS
    9 :
    

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51. ८ճ 8BML
    ͷಈ͖
    
    
    
    
    ˎ
    7JTJUPS
    

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52. Կ͕خ͍͠ͷ͔ʁ
    w ८ճͱ๚໰࣌ͷϊʔυૢ࡞ͷ੹຿ͷ෼཭͕Ͱ͖Δ͜ͱ
    w ८ճ͸Ͳͷछྨͷϊʔυ͔ʹ͸ؔ༩ͤͣಁաతͳΞΫηε͕Ͱ͖Δ
    w ֤ϊʔυ͝ͱʹઐ༻ͷॲཧΛॻ͘ͷͰίʔυͷݟ௨͕͠ྑ͍
    w ϊʔυૢ࡞ʢ7JTJUʣΛϢʔβ͕֦ு͢Δ͜ͱ͕Ͱ͖Δ
    ˞(P'ͷσβΠϯύλʔϯͰݴ͑͹7JTJUPSύλʔϯʹ͍͕ۙɺ׬શʹҰக͍ͯ͠ΔΘ͚Ͱ͸ͳ͍
    

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53. ࠓճ঺հͨ͠ύλʔϯ
    w ಡΈࠐΈॲཧΛಁաతʹѻ͏ͨΊͷ3FBEFSʢඪ४ϥΠϒϥϦΑΓʣ
    w ໦૸ࠪΛݡ͘ಁաతʹѻ͏ͨΊͷ7JTJUPSʢݴޠॲཧܥΑΓʣ
    

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54. Ͳ͕͜ΦϒδΣΫτࢦ޲ͩͬͨͷ͔ʁ
    

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55. w ಡΈࠐΈॲཧΛಁաతʹѻ͏ͨΊͷ3FBEFSʢඪ४ϥΠϒϥϦΑΓʣ
    w ໦૸ࠪΛݡ͘ಁաతʹѻ͏ͨΊͷ7JTJUPSʢݴޠॲཧܥΑΓʣ
    Ͳ͕͜ΦϒδΣΫτࢦ޲ͩͬͨͷ͔ʁ
    ݺͼग़͠ݩ͔Βৄࡉͷ࣮૷Λҙࣝ͠ͳ͍
    ৄࡉ͸ͦͷੑ࣭͝ͱʹಈ࡞͢Δ
    

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56. Ͳ͕͜ΦϒδΣΫτࢦ޲ͩͬͨͷ͔ʁ
    w ಡΈࠐΈॲཧΛಁաతʹѻ͏ͨΊͷ3FBEFSʢඪ४ϥΠϒϥϦΑΓʣ
    w ໦૸ࠪΛݡ͘ಁաతʹѻ͏ͨΊͷ7JTJUPSʢݴޠॲཧܥΑΓʣ
    ΧϓηϧԽ
    ϙϦϞʔϑΟζϜ
    

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57. ࠷ޙʹ
    lจ໌ͷਐา͸ɺਓ͕ҙࣝͤͣʹ਱ߦՄೳͳ
    ॏཁԋࢉͷ਺త֦େʹΑΓ΋ͨΒ͞ΕΔz
    "MGSFE/PSUI8IJUFIFBEʢ਺ֶऀʣ
    

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58. ຊࢿྉ͸TQFBLFSEFDLʹͯެ։ࡁΈͰ͢
    BETIPMPLP BETIPMPLP
    5IBOLZPV
    

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