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Annotation? Decorator?
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fand/amagitakayosi
November 22, 2015
Technology
1
2.2k
Annotation? Decorator?
ng-kyoto#3
fand/amagitakayosi
November 22, 2015
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Transcript
"OOPUBUJPOʜ %FDPSBUPSʜ OHͷ"OOPUBUJPOʹ͍ͭͯ !BNBHJUBLBZPTJ
@amagitakayosi
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͍͍
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OHYYY ϝιουνΣΠϯ
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ΦϨΦϨ$MBTT
ͬͱϞμϯʹ ॻ͖͍ͨʂ
OH ࠶ೖ
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&4$MBTTʂ
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ΊͰͨ͠ ΊͰͨ͠
͍͍ ͪΐͬͱͬͯ
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!$PNQPOFOU ͱʜʜʁ
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%FDPSBUPS
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Decorator w &$."4DSJQU1SPQPTBMͷҰͭ TUBHF w ؔΫϥεΛम০Ͱ͖Δ w 1ZUIPOͷEFDPSBUPSͱେମಉ͡
༻ྫ w NJYJO %* ϝϞԽ ʜʜ w KBZQIFMQTDPSFEFDPSBUPS w DIBUXPSLXSBTTF
https://speakerdeck.com/armorik83/es7-decorators ࢀߟBSNPSJL͞Μͷղઆ
࣮ঢ়گ w CBCFM CBCFMQMVHJOTZOUBYEFDPSBUPST w 5ZQF4DSJQU Wd
CBCFMͰ !$PNQPOFOU ͑Δʂ
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Μʜʜʁ
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SFqFDUNFUBEBUB ແ͠Ͱ !$PNQPOFOU͏ͱ Τϥʔग़Δʂʂʂʂʂ 5ZQF4DSJQUͷ߹FNJU%FDPSBUPS.FUBEBUBΦϓγϣϯ͕ඞཁ
reflect-metadata w NFUBEBUBΛѻ͏ͨΊͷQPMZpMM w &43FqFDUʹϝιουՃ w 3FqFDUHFU.FUB%BUB ͱ͔
3FqFDU .FUBEBUB
ES6 Reflect w ϝλϓϩ༻ศརϝιουू w 1SPYZͱ͍ͬ͠ΐʹͬͨΓ w AOFXAΛॻ͔ͣʹ Πϯελϯεੜͨ͠Γ
http://www.2ality.com/2014/12/es6-proxies.html ࢀߟ .FUBQSPHSBNNJOHXJUI &$."4DSJQUQSPYJFT
NFUBEBUBͬͯ Կʜʜ
Θ͔Βͳ͍ͷͰ ΤϥʔՕॴ ݟͯΈΔ
NPEVMFTBOHVMBSTSDDPSFVUJM EFDPSBUPSTUTͰΤϥʔग़ͯΔ
͙͢ԼͷNBLF%FDPSBUPSͰ 3FqFDU৮ͬͯΔ
͙͢ԼͷNBLF%FDPSBUPSͰ 3FqFDU৮ͬͯΔ
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"OOPUBUJPO
Annotation w 5SBDFVS"U4DSJQUͰ࠾༻͞Εͨ ಛघه๏ͷҰͭ w ؔΫϥεΛؾ߹Ͱम০͢Δ w 1ZUIPOͷEFDPSBUPSͱશવҧ͏
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ରΦϒδΣΫτʹ BOOPUBUJPOྻΛ ڧҾʹੜ͠ "OOPUBUJPOΛอଘ
AtScriptͷग़ྗJSΛݟΔͱ w "OOPUBUJPOؔͰͳ͘Ϋϥε w ରͷΫϥεʹ BOOPUBUJPOϑΟʔϧυΛੜ͠ "OOPUBUJPOͷΠϯελϯεΛอଘ
ڧҾ
"OOPUBUJPOͰ Ͱ͖Δ͜ͱ %FDPSBUPSͰ Ͱ͖Δʂʂʂʂʂ
࣌ܥྻ w 5SBDFVSʹ"OOPUBUJPO͕Ճ w &4%FDPSBUPSTͷQSPQPTBM w "U4DSJQUൃද w "U4DSJQUऴྃͷ͓Βͤ
͕࣌มΘͬͨͷͰ ํͳͦ͞͏ ʢ◞‸◟ʣ
͜ΕΛ౿·͑ͯ NBLF%FDPSBUPSΛ ಡΉͱ
DMTBOOPUBUJPOTྻͷΘΓʹ SFqFDUNFUBEBUBͬͯΔ
3FqFDUHFU0XO.FUBEBUB Λ ͨͲ͍ͬͯ͘ͱ 8FBL.BQΛͬͯ ΦϒδΣΫτຖͷ.FUBEBUBΛ อଘ͍ͯ͠Δ
NBLF%FDPSBUPSͷ ׂʜʜʁ
"OOPUBUJPOͷΈΛ ࠶ݱ͢Δ
"OOPUBUJPOͷΈΛ ࠶ݱ͢Δ BOOPUBUJPO$MT͔Β %FDPSBUPSΛ࡞ͬͯฦ͢
"OOPUBUJPOΘΓͷ %FDPSBUPSΛ࡞Δ ؔͩͬͨʂ
!$PNQPOFOUͷ ࣮ʁ
NPEVMFTBOHVMBSTSDDPSF NFUBEBUBUT-- NBLF%FDPSBUPSʹ $PNQPOFOU.FUBEBUBΛͯ͠Δ
NPEVMFTBOHVMBSTSDDPSF NFUBEBUBEJSFDUJWFTUT-
͏Ή
·ͱΊ
·ͱΊ w "OOPUBUJPOͱ%FDPSBUPSผ w OHੲ"OOPUBUJPOΛͬͯͨ w ݱࡏSFqFDUNFUBEBUBΛ͍ %FDPSBUPSͰ"OOPUBUJPOΛ ࠶ݱ͍ͯ͠Δ
ײ w OHɺֶशϦιʔεړΔΑΓ ຊମίʔυͷίϝϯτಡΜͩ΄͏ָ͕ w SFqFDUNFUBEBUBɺ 8FBL.BQ͍͍͚͑ͩͰʁ w QSPQPTBMग़͢ͷ࣏త͗͢Δ
ڭ܇ ϓϩδΣΫτʹ ࣌ؒΛ͔͚͗͢Δͳ
͋Γ͕ͱ͏͍͟͝·ͨ͠
ˣؔ࿈ϖʔδͷϒΫϚˣ http://b.hatena.ne.jp/amagitakayosi/ng2/