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Swift पใ 2018/09/04 John Lin @johnlinvc

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From the core • Swift 5: Start your engines

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Swift 5: Start your engines • Release date: Late 2018 • ໨ඪ: ABI stability (again) ɼแؚ generic, API resilience, memory ownership model • ။޲Լ૬༰ 4

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Evolution • [SE-0220] count(where:) • [SE-0224] Support 'less than' operator in compilation conditions • [SE-0225] isEven, isOdd, isMultiple • [SE-0226] Package Manager Target Based Dependency Resolution

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[SE-0220] count(where:) • ཁዎᒬᏐ [1,2,3,4,5,6,7] ཫ໘༗ଟগۮᏐ䏆ʁ [1,2,3,4,5,6,7].filter { $0 % 2 == 0 }.count • Ṝᒬతሜ๏ଖመ䋯తൺֱຫɼfilter ။ઌ䋯Ұ࣍᫮ ᅲɼ count ။࠶䋯Ұ࣍

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[SE-0220] count(where:) [1,2,3,4,5,6,7].reduce(0) { $0 + ($1 % 2 == 0 ? 1 : 0) } • Ṝᒬతሜ๏䋯తൺֱշɼୠੋ኷೉䔟㣛ੋࡏ၏ॄኄɻ

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[SE-0220] count(where:) var count = 0 for n in [1,2,3,4,5,6,7] { count += n % 2 == 0 ? 1 : 0 } • ࿨ reduce Ұᒬշɼෆա޷௕ɻ

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[SE-0220] count(where:) [1,2,3,4,5,6,7].count{$0 % 2 == 0} • ৽⃧ Sequence#countɼ䋯ىိ࿨ reduce Ұᒬշɼ ෆաൺֱ໌֬ɻ

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[SE-0224] Support 'less than' operator in compilation conditions #if swift(>=5.0) print("this is 5.0") #endif • ݱࡏՄҎ༻্໘తํ๏ိ൑Ꮧ Swift ൛ຊ • ෆա୞ೳ༻ >=ɼཁখԙ୞ೳ༻ ! ိᒾҰෆੋ >= #if !swift(>=5.0) print("this is not 5.0") #endif

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[SE-0224] Support 'less than' operator in compilation conditions #if swift(<5.0) print("this is not 5.0") #endif • ೭ޙՄҎ༻ < ိ൑Ꮧ Swift ൛ຊ

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[SE-0225] isEven, isOdd, isMultiple • ᧷ಘ㑌࣍౎ཁሜ n % 2 == 0 ኷൥䆩ʁ • େՈ᧷ಘ -3 % 2 ੋଟগ䏆ʁ

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[SE-0225] isEven, isOdd, isMultiple • ༗ਓఏҊཁՃ n.isEven, n.isOdd, n.isMultiple(of:) • ࠷ޙ୞༗ n.isMultiple(of:) ௨աɼ။Ճ౸ Swift 5 ཫɻ • ֩৺ᅶୂ᧷ಘ isEven Ṝछ؆ᄸతେՈࣗݾሜब޷ɻ ر๬ೳ೺ޠݴతද໘ੵେখ߇੍޷ɻ

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[SE-0226] Package Manager Target Based Dependency Resolution • Ұݸ Package ཫ໘ৗৗ༗኷ଟෆಉ target, 㑌ݸ target ౎༗֤ࣗత dependencyɻݱࡏ༻ྃҰݸ Package ब။೺ॴ༗త dependency ౎፛ਐိɼ೭ ޙ୞။፛༗༻౸త targetɻ

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૓ྛ [SE-0226] Package Manager Target Based Dependency Resolution ߳া ᘈᘈ ᘆࢠ थ

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૓ྛ [SE-0226] Package Manager Target Based Dependency Resolution ߳া ᘈᘈ ᘆࢠ थ

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Community • 㟬ঋڃ iOS beta ྃ䆩ʁ • 㟬ใ໊ iplayground ྃ䆩ʁ

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iOS 12 beta upgrade •

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iPlayground • https://iplayground.io 10/20(࿡)-21(೔ʣ • ݱਖ਼ᄧථɼ㐸ߘதɻ