addObserver: から考える API インタフェース

by KAMEDAkyosuke

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͋Εʁ

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#MPDLCBTFEPCTFSWFSTWJBUIF4/PUJpDBUJPO$FOUFS BEE0CTFSWFS'PS/BNFPCKFDURVFVFVTJOH#MPDL> NFUIPETUJMMOFFEUPCFVOSFHJTUFSFEXIFOOPMPOHFS JOVTFTJODFUIFTZTUFNTUJMMIPMETBTUSPOHSFGFSFODF UPUIFTFPCTFSWFST

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ͭ·Γ

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J04͔Β/4/PUJpDBUJPO$FOUFS ͷSFNPWF0CTFSWFS͠ͳͯ͘΋ ྑ͘ͳͬͨ

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Ͱ͸ͳ͘

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J04͔Β/4/PUJpDBUJPO$FOUFSͷ BEE0CTFSWFS͸SFNPWF0CTFSWFS ͠ͳͯ͘΋ྑ͘ͳͬͨ

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͜ΕΛ;·͑ͯ

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ͦ΋ͦ΋SFNPWF0CTFSWFS ͠ͳͯ͘Α͍ͬͯྑ͍͜ͱʁ

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ϓϩάϥϛϯάͷ͓࡞๏ w ϝϞϦΛ֬อͨ͠Β w ϑΝΠϧΛ։͍ͨΒ w τϥϯβΫγϣϯΛ։࢝ͨ͠Β w 5$1ιέοτΛ։͍ͨΒ

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ϓϩάϥϛϯάͷ͓࡞๏ w ϝϞϦΛ֬อͨ͠Βղ์͠ͳ͚Ε͹ͳΒͳ͍ w ϑΝΠϧΛ։͍ͨΒด͡ͳ͚Ε͹ͳΒͳ͍ w τϥϯβΫγϣϯΛ։࢝ͨ͠Βऴྃ͠ͳ͚Ε͹ͳΒͳ͍ w 5$1ιέοτΛ։͍ͨΒด͡ͳ͚Ε͹ͳΒͳ͍

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BEESFNPWF0CTFSWFS ͸Ͳ͏Ͱ͠ΐ͏͔ʁ

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͍͔ͭ͘ͷΫϥεΛ֬ ೝͯ͠Έ·͠ΐ͏

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ϓϩάϥϛϯάͷ͓࡞๏ w SFHJTUFSͨ͠ΒVOSFHJTUFS͠ͳ͚Ε͹ͳΒͳ͍

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/4/PUJpDBUJPO$FOUFS ͦΕҎ֎ͷΫϥε SFNPWF0CTFSWFS͠ͳ͍ ໰୊ͳ͠ ໰୊͋Γ SFNPWF0CTFSWFS͢Δ ໰୊ͳ͠ ໰୊ͳ͠ දʹ͢Δͱ

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·ͱΊ w "1*ͷΠϯλϑΣʔε͸ͦΕࣗ਎͚ͩͰͳ͘ଞͷΫϥε΍ ϑϨʔϜϫʔΫ౳͔ΒܾΊΔ΂͖ w ͳͷͰɺ͋Δ"1*ͷ࢖༻ํ๏͕มΘ͔ͬͨΒͱ͍ͬͯଞ ͷΫϥεͱͷؔ࿈ʹ஫ҙ͢΂͖ w ͦͷ্Ͱࣗ෼ͷϓϩδΣΫτʹͲ͏औΓ૊Ή͔ܾΊ·͠ΐ ͏