Swift weekly 2018/09/04

Transcript

1. Swift पใ 2018/09/04 John Lin @johnlinvc

2. From the core • Swift 5: Start your engines

3. Swift 5: Start your engines • Release date: Late 2018

   • ໨ඪ: ABI stability (again) ɼแؚ generic, API resilience, memory ownership model • ။޲Լ૬༰ 4

4. 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

5. [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

6. [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

7. [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

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

   reduce Ұᒬշɼ ෆաൺֱ໌֬ɻ

9. [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

10. [SE-0224] Support 'less than' operator in compilation conditions #if swift(<5.0)

    print("this is not 5.0") #endif • ೭ޙՄҎ༻ < ိ൑Ꮧ Swift ൛ຊ

11. [SE-0225] isEven, isOdd, isMultiple • ᧷ಘ㑌࣍౎ཁሜ n % 2 ==

    0 ኷൥䆩ʁ • େՈ᧷ಘ -3 % 2 ੋଟগ䏆ʁ

12. [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

13. [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

14. ૓ྛ [SE-0226] Package Manager Target Based Dependency Resolution ߳া ᘈᘈ

    ᘆࢠ थ

15. ૓ྛ [SE-0226] Package Manager Target Based Dependency Resolution ߳া ᘈᘈ

    ᘆࢠ थ

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

17. iOS 12 beta upgrade •

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