Swift Weekly 11/1

Transcript

1. Swift पใ 11/1 John Lin @johnlinvc
2. From the core • Swift 3.0.1 GM • ࢧԉߋଟత Ubuntu ൛ຊ • Server API Project
3. Swift 3.0.1 GM • แؚࡏ Xcode 8.1 㚎 • https://developer.apple.com/library/content/ releasenotes/DeveloperTools/RN-Xcode/ Introduction.html
4. ࢧԉߋଟత Ubuntu ൛ຊ • աڈࢧԉ • 14.04 • 15.10 • ৽⃧ • 16.04 • 16.10
5. Server API Project • ਪಈލฏ୆త Server Side ጯ༻ɻ • ሡ໢࿏࿨҆શ૬᮫త API Ҡ২౸ Swift ɼ ࠶໵ෆ༻ґ ↳֎෦త C ఔࣜݿɻ • ෆ။แؚߴ֊త Server ᐽՍɻ • ݱࡏత໨ඪੋݐཱҰݸᘐཱత౟݅ɼ؃؃੒Ꮘ೗Կ࠶ ܾఆཁෆཁ㚎ݐɻ
6. Server API workgroup • ֩৺੒һแؚ Chris Bailey (@seabaylea, IBM Kitura), Logan Wright (@LoganWright, Vapor), Paulo Faria (@paulofaria, Zewo), Steve Algernon (@salgernon, Apple) • ૬᮫ऀ(stakeholder): ኷ଟਓɼ୞ཁᚙPR बՄҎᙛ૬᮫ऀ • ྲྀఔ:
 API ఏҊ -> ֩৺/૬᮫ऀධ࿦-> Evolution ධ࿦ -> ։ᚙ -> ᚙ෍ -> ࢖༻ -> ճᰶ
7. Evolution • SE-0141 ࢖༻ @available ိඪࣔ Swift ൛ຊ • SE-0142 ༻where ိݶ੍ associated types • (佀ճ) SE-0144 Ҹڐ࢖༻ $ ᙛ࡞ identifier
8. SE-0141 ࢖༻ @available ိඪࣔ Swift ൛ຊ • ݱࡏཁᒾҰ Swift ൛ຊ୞ೳ༻ #if swift(>=3.0) Ṝछڊ ूɻ • ະိՄҎ༻ @available(swift 3) ိએࠂՄ༻త swift ൛ ຊɻ • ໵ՄҎ༻ @available(swift, obsoleted: 3.1) ိએࠂະိ ။ኑআɻ • ࿨ڊूతࠩҟᴍࡏෆधཁॏ৽ฤᩄɻ
9. SE-0142 ༻where ိݶ੍ associated types • ՄҎݶ੍ associated type ೭ؒత᮫࿆ੑ protocol Sequence { associatedtype Iterator : IteratorProtocol associatedtype SubSequence : Sequence where SubSequence.Iterator.Element == Iterator.Element }
10. (佀ճ) SE-0144 Ҹڐ࢖༻ $ ᙛ࡞ identifier • աڈ༗Ұݸ Bug ੋՄҎ༻ᄸҰݸ $ ᥒᙛ၏ identifier • ॴҎग़ݱྃҰݸ Lib ڣ၏ dollar ՄҎ၏Ұࠣ Functional తࣄɼ૾ੋ map/reduce • ޙိଞ၇೺Ṝݸ bug म޷ྃɼୠ༗ਓबෆ։৺ྃ • ࠷ޙେՈܾఆෆೳҝྃҰݸ Lib ೺ swift Ꮣಘෳᯑ

11. Community • ᔟܕ Range ԋࢉ๏ https://oleb.net/blog/2016/10/ generic-range-algorithms/ • TouchBar API https://developer.apple.com/macos/ touch-bar/
12. ᔟܕ Range ԋࢉ๏ • Swift 3 ༗ၷछ range • Range a..<b ෆแؚ b • CloseRange a…b แؚ b • ໰୊ࡏଞ၇೭ؒෆೳޓ૬᫚׵
13. Range 㚎ᬋػᏐࣈ func random(from range: Range<Int>) -> Int { let distance = range.upperBound - range.lowerBound let rnd = arc4random_uniform(UInt32(distance)) return range.lowerBound + Int(rnd) } let random1 = random(from: 1..<10) let random2 = random(from: 1...10) //error
14. Range 㚎ᬋػᏐࣈ func random(from range: Range<Int>) -> Int { let distance = range.upperBound - range.lowerBound let rnd = arc4random_uniform(UInt32(distance)) return range.lowerBound + Int(rnd) } func random(from range: ClosedRange<Int>) -> Int { let distance = range.upperBound - range.lowerBound let rnd = arc4random_uniform(UInt32(distance)) return range.lowerBound + Int(rnd) } let random1 = random(from: 1..<10) let random2 = random(from: 1...10)
15. ׵Ұݸ૝๏ extension RandomAccessCollection { func random() -> Iterator.Element? { guard count > 0 else { return nil } let offset = arc4random_uniform(numericCast(count)) let i = index(startIndex, offsetBy: numericCast(offset)) return self[i] } } (1..<10).random() (1...20).random() ["a","b","c","d"].random()