Swift From Two to Three
Swift From Two to Three
About the Book
Swift 3 is a major, breaking language change. Are you ready to make the jump? Let "Swift From Two to Three" help you along the way. From migrating your code, updating your style, and adopting new Swift features, this book ushers you into the newly refreshed language. Learn what changed, why it changed, and how you can update your code using this hands-on guide that covers all the major difference with plenty of examples and insight.
- Swift's Background
- An Evolving Language
- From 2 to 3
- Swift History
- Denial, Anger, Bargaining, and Acceptance
- Learning Swift
- How to Migrate
- Swift 2.3 and Swift 3.0
- Migration Lessons
Swift 2 to 3
- Access Control
- Open Access for Classes
- First Parameter Argument Labels
- Default Parameter Order
- Removing Argument Labels from Types
- Required Parameter Parentheses
- Improved Operator Precedence
- Operator Implementations in Types
- Operator and Comment Interaction
- Updated Conditions
- Moving Generic `where` Clauses
- Declaring Compound Protocols
- Generic Type Aliases
- Keyword-named Members
- Automated Framework API Changes
- API Pruning
- Imported Boolean Properties
- Imported APIs and Default Arguments
- Structural Import Changes
- Importing Objective-C `id`
- Errors and NSError
- Abolishing the ImplicitlyUnwrappedOptional Type
- Explicit Bridging Conversions
- Objective-C Options and Constants
- Property Selectors
- Key Paths
- Other Import Changes
Standard Library and Swift Foundation
- API Guidelines
- Lower Case Enumerations for Apple APIs
- Swift Foundation Value Types
- Inspecting Values and Types
- Pointer Nullability
- Accessing Raw Untyped Memory
- The Never Type
- New Sequence Functions
- Removing Optional Comparisons
- Building Strings from UTF8 Units
- Indexing Collections
- Standard Library API Changes
Swift 2 to Swift 2.3
- For Loops, Increments and Decrements
- Associated Types
- Compile Time Version Checks
- Eliminating parameter backticks
- Compile-time Selectors Checks
- Naming Functions with Argument Labels
- Tuple Comparisons
- Goodbye to Tuple Splat
- Var Parameter Deprecation
- Redesigning Currying
- Debug identifiers are renamed
- Dot Operators
- Upgrading AnyGenerator
- And more…
Swift 3 to 3.1
- Adding `prefix(while:)` and `drop(while:)` to the Standard Library
Major Swift 3 and 4 announcements
- Swift 3.0 Release Process
- Swift ABI Stability Deferred
- Swift 3 Endgame and Swift 4 Kickoff
- Ending Swift 3 Source Breaking Changes
- Wrapping up Swift 3 and starting Swift 4
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