展望 Swift 4

Transcript

1. ల๬ Swift 4 John Lin @johnlinvc
2. ճސSwift 3 • Swift 3 ။ੋҰݸ኷๮త൛ຊɻ • ౸໨લҰڞ༗88 ݸमվɻ
3. Open source ඇৗ๮ • ೳⴺᡉू༗೤৘࿨࠽ೳత֤Ґ • ᦒવਐఔຫɼୠੋೳ㗞ग़ߴ඼࣭త݁Ռ
4. [։ݯ]ೈᱪ࣌ఔ༬ဟ • ኷೉ • ༗Ұࠣ໨ඪᔒ༗ୡ੒ • ໨ඪෆੋঝ୚ɼᔒୡ੒ՄҎࡏ౒ྗ
5. ᡉযࡏॏᴍ • ༗త࣌ީଠଟࣄ৘ᚙੜɼᔒ㭎๏ಉ᮫࣌஫
6. धཁ໌֬త໨ඪ • Ұ։࢝(12݄౸1݄) Swift 3 ᔒ༗໌֬త໨ඪɻ • ޙိ༗໌֬త໨ඪޙࣄ৘बॱརଟྃ
7. ෆՄೳᩋ㑌ݸਓ౎։৺ • 㑌ݸܾఆ౎༗ࠣਓتᓣɼ༗ࠣਓෆتᓣɻ • แؚࣄ৘తઌޙॱংɼੋ൱धཁ๭ࠣޭೳ • https://github.com/apple/swift-evolution/blob/ master/commonly_proposed.md
8. ։ᚙܭᙘ • 2016 : Swift 3.0 • 2017 य़ఱ: Swift 3.x • 2017 ळఱ: Swift 4 • ଖத။ἥᎎ bugfix release ૾ੋ 3.0.1
9. Swift 4 • Swift 4 ሡ။෼੒ၷݸ։ᚙ֊ஈ
10. ୈҰ֊ஈ • ሢ஫ࡏఔࣜᛰ࿨ ABI తᜦఆ౓ɻ؆ᄸိ㘸बੋ૬༰ ੑɻ • ࿨Ṝݸ໨ඪແ᮫తෆ။ඃߟྀɻ • ༗Ұࠣ؃ىိແ᮫ɼୠੋఈ૚መ࡞༗᮫త໵။ඃߟ ྀɻ ൺํ㘸 conditional conformanceɻ • େ֓။၏౸໌೥य़ఱ
11. Conditional Conformance extension Array : Equatable where Element : Equatable { } func ==<T : Equatable>(lhs: Array<T>, rhs: Array<T>) -> Bool { ... }
12. ୈҰ֊ஈ • ሢ஫ࡏఔࣜᛰ࿨ ABI తᜦఆ౓ɻ؆ᄸိ㘸बੋ૬༰ ੑɻ • ࿨Ṝݸ໨ඪແ᮫తෆ။ඃߟྀɻ • ༗Ұࠣ؃ىိແ᮫ɼୠੋఈ૚መ࡞༗᮫త໵။ඃߟ ྀɻ ൺํ㘸 conditional conformanceɻ • େ֓။၏౸໌೥य़ఱ
13. ఔࣜᛰ૬༰ੑ • ᩋ࠷৽త Compiler ޲Լ૬༰ɻ • ⃧ՃҰݸྨࣅ -std=swift3 ṜҰྨత Compiler બ ߲ɻ • ࢧԉመᱛੑޭೳతతબ߲ɼ૾ੋ -fcool-new-feature
14. ఔࣜᛰత䧬ੑ • ආ໔ఔࣜҼҝ API վᏓࣕᆦᎃ • ᩋSwift త API ՄҎ༗ԋԽతػ။ • ൺํ㘸ආ໔ fragile base class ໰୊ɻ
15. Fragile Base Class class Foo{ func p(str:String){ print(str) } } class Bar : Foo{ func log(str:String){ p(str: str) } }
16. Fragile Base Class class Foo{ func p(str:String){ //print(str) //ෆཁ౸႔စ print } } class Bar : Foo{ func log(str:String){ p(str: str) } }
17. Fragile Base Class class Foo{ func p(str:String){ //print(str) //ෆཁ౸႔စ print } } class Bar : Foo{ func log(str:String){ p(str: str) // } }
18. ආ໔ Fragile Base Class • ࢖༻ private, internal, public, open, final ౳ ᮫伴ࣈ • ୞༗ଧࢉඃਓ៺ঝతClass ࠽֘ඃ៺ঝɻ
19. ABI मվ • 㗞ੜ bytecode త෦෼༗኷ଟࡉઅཁमվɻ • ෆӨڹҰൠUserɻ
20. վਐ Generic • ࢧԉ Conditional Conformance ࿨ Recursive protocol constraintsɻ • Ҏٴଖሏ࿨ ABI ༗᮫తमվɻ
21. Recursive protocol constrains protocol Tree{ associatedtype Child : Tree }
22. ߋ޷తString • String ඇৗॏཁɻ • ቮៃ༗኷ଟमվత૝๏ • ໨ඪੋൺ Perl ߋ޷త String processing!
23. Memory Ownership model • อཹARC, ⃧ՃҰݸֹ֎૾Rustత ownership modelɻ • ᩋ Swift ༗ߋೳⴺ༬ଌతᏈೳɻ • ။େ෯मվABI, Type Systemɻ
24. ୈೋ֊ஈ • ࣄ৘ॱརత࿩ؐ༗࣌ؒ၏ଖଞతॏཁޭೳ • ༗኷ଟೳ၏తɼෆաॱং౸࣌ި࠽။ܾఆɻ
25. Reflection • ቮៃ༗େ෦෼త data reflectionɼୠधཁ৽⃧޷༻త User APIɻ • ໵धཁઃܭ৽త method reflection runtime ࿨ API
26. First Class Concurrency • Actor, async/await, atomic ೭ྨత • 㑌ݸਓ౎૝ཁ • ೭ޙ။޷޷త౼࿦ɼෆաSwift 4 ग़ိલጯ֘၏ෆ ׬ɻ
27. վਐ Generic • ࿨ABI ᔒ᮫܎త෦෼ɻ • ᩋ Swift Generic ߋڧେɻ
28. ᜦఆ .swiftmodule • ࡏṜ೭લཁઌ༗ᜦఆత ABI
29. Scripting ޭೳ • ਖ਼نදࣔࣜ , ଟߦతString ౳౳ • ෆ୞ሜscript తਓ૝ཁɼ၏Web తਓ໵૝ཁ
30. Property తߦҝ • ᩋProperty ߋ޷༻ɻൺํ㘸 observer ɼଟॏ accessor
31. ଖଞҰେଯ • Submodules • implicit promotions 
 between numeric types • importing C++ APIs • hygenic macro system • guaranteed tail calls • making enums enumerable • typed ‘throws’ • user defined attributes • abstract methods/classes • better SIMD support • ‘dynamic’ for non- at objc • data parallelism support • higher kinded types • ଒ൟෆٴඋࡌ
32. Syntactic Sugar • ኷ଟ • ࠷௿༏ઌ౓
33. ݁࿦ • Swift 4 ။ઌᜦఆ Source & ABI • ။༗৽త Memory Model • Swift 3 ጯ֘ࠓ೥ळఱ။ग़
34. Q&A