WWDC — 2018 What’s New in Swift?

5th June 2018 09:30 PM GMT 5:30+

Swift 4.2 — Major release

Only the greatest developers will survive
- Hitendra Solanki inspired by Charles Darwin

• XCode 10 -Swift 4.2
• Faster build process with XCode 10 and Swift 4.2
• Big improvements in ARC call managed by system — now we have less ARC calls only at start of scope and at the end of scope.
• Now code size reduced with 10% to 30%
• CaseIterable Protocol to Iterate all Cases of Enums
• Array of Elements is now automatically Equatable if element is equatable
• Struct and Classes are automatically Equatable and Hashable if all the elements of struct or class is equatable or Hashable respectively, Same for enum with tuple values also
• New Hash function of Hashable protocol that is helpful to generate single hash value from group of hash values
• randomElement() and shuffle() function on collection type
• canImport(UIKit) conditional package import
• Refined IUO — redeveloped implicitely unwrapped optional with proper support of Mental Model
• Improved ambiguity error checking to detect Exclusive access violation