Swift Weekly 11/22

Transcript

1. Swift पใ 11/22 John Lin @johnlinvc
2. From the core • Xcode 8.2 beta 2
3. Evolution • SE-0145 Protocol બᎩੑ૬༰
4. SE-0145 Protocol બᎩੑ૬༰ extension Array: Equatable where Element: Equatable { static func ==(lhs: Array<Element>, rhs: Array<Element>) -> Bool
 { ... } } ᙛArray தత౦੢ՄҎൺሣੋ൱૬౳࣌ɼṜछ Array ໵ՄҎൺሣ૬౳
5. SE-0145 Protocol બᎩੑ૬༰ let a:[Int] = [1,2] let b:[Int] = [1,2] a == b //OK /// Returns `true` if these arrays contain the same elements. public func ==<Element : Equatable>(lhs: [Element], rhs: [Element]) -> Bool a ཫ໘తݩૉੋՄҎൺֱతIntɼ ॴҎ a ࿨ b ՄҎൺֱ
6. SE-0145 Protocol બᎩੑ૬༰ 
 
 
 
 /// Returns `true` if these arrays contain the same elements. public func ==<Element : Equatable>(lhs: [Element], rhs: [Element]) -> Bool ca ཫ໘తݩૉੋෆೳൺֱతCatɼ ॴҎ ca ࿨ cb ෆೳൺֱ
7. SE-0145 Protocol બᎩੑ૬༰ /// Returns `true` if these arrays contain the same elements. public func ==<Element : Equatable>(lhs: [Element], rhs: [Element]) -> Bool aa ཫ໘తݩૉੋՄҎൺֱత [Int] ୠੋ aa ࿨ bb ෆೳൺֱ ?!
8. SE-0145 Protocol બᎩੑ૬༰ /// Returns `true` if these arrays contain the same elements. public func ==<Element : Equatable>(lhs: [Element], rhs: [Element]) -> Bool ၷݸ෺݅ೳෆೳൺֱੋ؃༗ᔒ༗૬༰ Equatable protocol public protocol Equatable { public static func ==(lhs: Self, rhs: Self) -> Bool } ༗ == function ୠੋᔒ༗એࠂ૬༰ Equatable ؐੋ။ඃᙛ੒ෆೳൺ ֱ
9. SE-0145 Protocol બᎩੑ૬༰ extension Array: Equatable where Element: Equatable { static func ==(lhs: Array<Element>, rhs: Array<Element>) -> Bool
 { ... } } ᙛArray தత౦੢ՄҎൺሣੋ൱૬౳࣌ɼṜछArray ໵ՄҎൺሣ૬౳ let aa:[[Int]] = [[1],[2]] let bb:[[Int]] = [[1],[2]] aa == bb //OK
10. SE-0145 Protocol બᎩੑ૬༰ extension MyStruct: MyProtocol1 where GenericParameter: MyProtocol2 { func protocol1_function() } • ᙛMyStruct త GenericParameter ჩᏐ૬༰ MyProtocol2 ࣌ɼ MyStruct ब။૬༰ MyProtocol1
11. SE-0145 Protocol બᎩੑ૬༰ • መࡍጯ༻ protocol Syncable { var json:String {get} func sync() } extension Syncable { func sync() {} // Default Impl } struct Menu : Syncable { internal var json: String } extension Array : Syncable where Element : Syncable { var json: String { ... } }
12. Community • ἷฏԽ㐲㐫 Class/Struct/Enum ఆٛ
13. ἷฏԽ㐲㐫 Class/Struct/Enum ఆٛ class A { let a:Int = 0 class B { let b:Int = 0 class C { let c:Int = 0 } } }
14. ἷฏԽ㐲㐫 Class/Struct/Enum ఆٛ class A { let a:Int = 0 } extension A { class B { let b:Int = 0 } } extension A.B { class C { let c:Int = 0 } }