(社内勉強会資料）JavaScriptのgeneratorの基本

2016/01/15 カルテットコミュニケーションズ開発部社内勉強会

補足：PHPのgeneratorにはsend()メソッドがありました http://php.net/manual/ja/generator.send.php

Transcript

1. +BWB4DSJQUͷ
   HFOFSBUPSͷجຊ
   Χϧςοτίϛϡχέʔγϣϯζɹޙ౻लએ
   IJEFOPSJHPUP!HNBJMDPN
   
   Χϧςοτίϛϡχέʔγϣϯζ։ൃ෦

   ࣾ಺ษڧձ
   

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2. HFOFSBUPSͱ͸
   w ΠςϨʔλΛ࡞Δؔ਺ʢɾɾɾ༻ޠͷৄࡉޙड़ʣ
   w 1)1ʹ΋͋Δʢ1)1Ͱಋೖ͞ΕͨZJFME(FOFSBUPSʣ
   w &4ఏҊ࢓༷
   w IUUQLBOHBYHJUIVCJPDPNQBUUBCMFFT ࣍ϖʔδ
   

   'JSF'PYɺ$ISPNFɺ#BCFMɺOPEFҎ߱ͳΒ0,
   w function*ͱyield/yield*Λ࢖͏
   

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4. HFOFSBUPSͱ͸ʢৄࡉʣ
   HFOFSBUPSؔ਺
   HFOFSBUPSΦϒδΣΫτ
   ɹΠςϨʔλ
   ఀࢭɾ࠶։ػೳ
   HFOFSBUPSΦϒδΣΫτʹঢ়ଶΛอଘ
   HFOFSBUPSؔ਺ΠςϨʔλɹͰ͸ͳͯ͘ɺHFOFSBUPS
   ؔ਺ͷ࣮ߦ݁ՌʹΠςϨʔλʢ*UFSBCMFʣ
   Ͱ͋Δ͜ͱʹ஫ҙ
   

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5. &$."4DSJQUߏจఆٛ
   

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6. ೖ໳αϯϓϧ
   GPSʜPGͰ഑ྻͷ஋Λϧʔϓʢ&4ʣ
   

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7. ಉ͡಺༰Λੜ1)1Ͱ
   1)1ͷ৔߹ɺGPSFBDIͷ࠷ॳʹΠςϨʔλͷ
   SFXJOE
   ͕࣮ߦ͞ΕΔͨΊɺ్த·ͰਐΜͩ
   ΋ͷ͸/(
   ࠷ॳ͔Βճ͚ͩ͢ͳΒGPSFBDIͰ໰୊ͳ͠
   

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8. 1)1ͷHFOFSBUPSʹ͸ͳ͍ػೳ
   w δΣωϨʔλΦϒδΣΫτʹ࡞༻Ͱ͖Δ

   ʢZJFMEPQFSBUPSQSFDFEFODFʣ
   ZJFMEͷ໭Γ஋
   IUUQTEFWFMPQFSNP[JMMBPSHKBEPDT8FC+BWB4DSJQU(VJEF*UFSBUPST@BOE@(FOFSBUPST
   

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9. Կʹ࢖͑Δͷʁ
   

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10. HFOFSBUPSͷ༻్
    w ΞυϗοΫʹΠςϨʔλɾɾɾαϯϓϧͷ΋ͷ
    w ू߹ԋࢉɾɾɾͭྫΛ঺հ
    w ඇಉظॲཧΛॱ࣮࣍ߦɾɾɾDP
    

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11. ू߹ԋࢉɾɾɾ഑ྻͷσΧϧτੵ
    w ͱ

    ͷ͢΂ͯͷ૊Έ߹Θͤ
    Ѫ஌ ΓΜ͝
    Ѫ஌ Έ͔Μ
    Ѫ஌ όφφ
    ذෞ ΓΜ͝
    ذෞ Έ͔Μ
    ذෞ όφφ
    ࡾॏ ΓΜ͝
    ࡾॏ Έ͔Μ
    ࡾॏ όφφ
    

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12. ͭͷ഑ྻͷੵ
    ͭͷ഑ྻͷੵ
    ஋Λฦ͍ͨ͠ͱ͜ΖͰZJFME
    

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13. ԋࢉɾɾɾDPNCJOBUJPO
    IUUQRJJUBDPNLVSBJUFNTEBFBFGDEF&"&'&"&#&#&&"#
    ࠶ؼͰɺͦͷதͷZJFMEͷ݁ՌΛ࢖͏
    ͜͜ʹ౸ୡͨ͠΋ͷ͔ΒΠςϨʔλʹग़ͯ͘Δ
    

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14. ඇಉظॲཧʢDPʣ
    w DPIUUQTHJUIVCDPNUKDP

    (FOFSBUPSCBTFEDPOUSPMqPXHPPEOFTTGPS
    OPEFKTBOEUIFCSPXTFS VTJOHQSPNJTFT
    MFUUJOHZPVXSJUFOPOCMPDLJOHDPEFJOB
    OJDFJTIXBZ
    w ·ͩཧղ͖͠Εͯͳ͍ͷͰɺࠓޙ೺Ѳͯ͠
    ղઆͰ͖ΔΑ͏ʹ͠·͢ʂ
    

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15. ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ
    

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16. ࢀߟ63-
    w .%/ΠςϨʔλͱδΣωϨʔλ

    IUUQTEFWFMPQFSNP[JMMBPSHKBEPDT8FC+BWB4DSJQU(VJEF*UFSBUPST@BOE@(FOFSBUPST
    w &$."4DSJQU-BOHVBHF4QFDJpDBUJPO

    (FOFSBUPS'VODUJPO%FpOJUJPOT

    IUUQXXXFDNBJOUFSOBUJPOBMPSHFDNBTFDHFOFSBUPSGVODUJPOEFpOJUJPOT
    w &$."4DSJQUDPNQBUJCJMJUZUBCMF

    IUUQLBOHBYHJUIVCJPDPNQBUUBCMFFT
    w UKDP

    IUUQTHJUIVCDPNUKDP
    w +BWB4DSJQUͷδΣωϨʔλΛۃΊΔʂ LVSBࢯ
    

    ࣮༻αϯϓϧ

    IUUQRJJUBDPNLVSBJUFNTEBFBFGDEF&"&'
    &"&#&#&&"#
    

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