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Swift ఔࣜখ೤਎ NSSpecialValue John Lin

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NSValue • ओཁ༗ၷݸޭೳ • ࡏ objc ཫṶଘ C తݪੜྨผ • ࿨NSCoder ߹࡞ɼ೺෺݅Ꮣ੒ࢿྉɻ

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ṶଘC తݪੜྨผ • ᙛ೥ objc త NSArray ୞ೳଘ NSObject త Subclassɼෆೳ௚઀ଘ Int, Bool ೭ྨత • ༻ NSValue แىိ೭ޙबՄҎଘࡏNSArray ཫ • ՄҎ༻ intValue ೭ྨత೺ C తࢿྉ፤ճိ

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NSCoding • ࡏ ෺݅࿨ࢿྉؒ࡞᫚׵ • See Zonble's book • https://github.com/zonble/kkbox-ios-dev/tree/ master/nscoding • https://zonble.gitbooks.io/kkbox-ios-dev/content/ nscoding/index.html

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NSCoding • ճၚ Any? త decoder ቮៃ deprecated ྃɼ੥༻ Generic ൛

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ࢿྉ᫚׵੒NSValue

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NSSpecialValue • NSValue త Subclass • NSPoint ೭ྨత౎ੋ

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NSSpecialValue subclass

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NSPoint(CGPoint) decode

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NSRange decode

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NSConcreteValue • ໵ੋ NSValue త subclass • แؚ ଖଞେ෦෼త objc 㚎ݐ type ɼ૾ੋ NSNumber

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NSConcreteValue

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NSNumber Decode

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Special vs Contrete • concrete ౎ੋޠݴ㚎ݐత • Special ౎ੋ Foundation త • ෆաFoundation େ෦෼໵౎ෆ Special • NSSpecialValueେ֓ੋաڈతҨಟ㠧

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݁࿦ • ؐੋ༻ Codable ޷ྃ • ୞༗ṧෆಘቮ࠶༻ NSCoding

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Q&A

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፮ᐔػ • http://slot.miario.com/machines/150067