Sams Teach yourself Swift in 24 hours

Content: Introduction   xiv Who Should Read This Book?   xv What Should You Expect from This Book?   xvi HOUR 1: Introducing the Swift Development Environment   1 What Is Swift?   1 Getting Started   2 Summary   10 Q&A   11 Workshop   11 Exercise   12 HOUR 2: Learning Swift\'s Fundamental Data Types   13 Constants in Swift   13 Variables in Swift   14 Introducing Data Types   15 Summary   23 Q&A   24 Workshop   24 Exercise   25 HOUR 3: Using Operators in Swift   27 Unary Operators   27 Binary Operators   29 Ternary Conditional Operators   35 Summary   36 Q&A   36 Workshop   37 Exercise   37 HOUR 4: Working with Collection Types   39 Arrays   39 Dictionaries   47 Sets   51 Tuples   55 Summary   56 Q&A   56 Workshop   57 Exercise   57 HOUR 5: Controlling Program Flow with Conditionals   59 The if Statement   59 The switch Statement   64 Summary   73 Q&A   74 Workshop   74 Exercise   75 HOUR 6: Understanding Optional Values   77 What Are Optional Values?   77 How to Designate a Variable as Optional   78 Wrapping and Unwrapping Optional Variables   79 Use Case for Optionals   85 Summary   87 Q&A   87 Workshop   87 Exercise   88 HOUR 7: Iterating Code with Loops   89 Two Categories of Loops   89 Transferring Control in Loops   102 Summary   104 Q&A   104 Workshop   104 Exercise   106 HOUR 8: Using Functions to Perform Actions   107 The Nature of Functions in Swift   108 General Function Syntax and Structure   108 Functions with No Parameters and No Return Type   110 The Type of a Function   110 Functions with Parameters   111 Functions with Variadic Parameters   113 Functions with Return Types   114 External Parameter Names   118 Default Parameter Values   120 Change Argument Values with In-Out Parameters   120 Exiting Early   121 Deferring Execution   122 Summary   123 Q&A   124 Workshop   124 Exercise   125 HOUR 9: Understanding Higher Order Functions and Closures   127 Higher Order Functions   127 Closures   134 Summary   143 Q&A   144 Workshop   144 Exercise   145 HOUR 10: Learning About Structs and Classes   147 Overview of Structs and Classes in Swift   147 What Swift Structs and Classes Have in Common   149 Differences Between Structs and Classes   157 When to Use a Class or a Struct   160 Summary   161 Q&A   161 Workshop   162 Exercise   163 HOUR 11: Implementing Class Inheritance   165 What Is Inheritance?   165 Identifying a Base Class   166 Creating a Subclass   167 Overriding Inherited Methods   169 Accessing super   172 Preventing Overrides   174 Class Identity   176 When to Use Class Inheritance   177 Summary   178 Q&A   179 Workshop   179 Exercise   181 HOUR 12: Harnessing the Power of Enums   183 Understanding Swift Enums   183 Swift Enum Structure   184 Raw Values   185 Enum Shorthand Syntax   187 Associated Values   189 Switching Enum Values   190 Adding Instance Methods to Enums   192 Summary   195 Q&A   195 Workshop   196 Exercise   197 HOUR 13: Customizing Initializers of Classes, Structs, and Enums   199 Initialization   199 Initializing Value Types   201 Advanced Initialization   209 Summary   217 Q&A   218 Workshop   218 Exercise   219 HOUR 14: Digging Deeper with Properties   221 Stored Properties   221 Computed Properties   224 Property Accessors   225 Property Observers   228 Inheriting and Overriding Accessors   231 Inheriting and Overriding Observers   233 Summary   236 Q&A   236 Workshop   237 Exercise   237 HOUR 15: Adding Advanced Type Functionality   239 Type Properties and Methods   239 Type Aliasing   246 Type Access Control   247 Subscripts   249 Type Casting and Non-Specific Types   253 Summary   257 Q&A   258 Workshop   258 Exercise   259 HOUR 16: Understanding Memory Allocation and References   261 Deinitialization   261 Automatic Reference Counting   265 Summary   275 Q&A   276 Workshop   277 Exercise   277 HOUR 17: Using Protocols to Define Behavior   279 Defining Protocols   279 Creating and Adopting Protocols   280 Properties   281 Defining Methods in Protocols   282 Using Protocol Names as Types   284 Adopting and Inheriting Multiple Protocols   285 Optional Protocol Properties and Methods   290 How to Check for Protocol Conformance   291 Using Protocols for Delegation   292 Summary   297 Q&A   298 Workshop   298 Exercise   299 HOUR 18: Using Extensions to Add Type Functionality   301 Defining Extensions   301 Adding Functionality with Extensions   303 Summary   313 Q&A   313 Workshop   313 Exercise   314 HOUR 19: Working with Optional Chaining   315 Defining Optional Chaining   315 Chaining Optional Properties   316 Subscripts   318 Methods   322 Summary   324 Q&A   325 Workshop   325 Exercise   326 HOUR 20: Introducing Generics   327 An Introduction to Generics   327 Type Parameters and Placeholder Types   328 Specifying Type Constraints   329 Creating Generic Types   333 Extending Generic Types   336 Using Associated Types in Protocols   337 Summary   339 Q&A   340 Workshop   340 Exercise   341 HOUR 21: Understanding Protocol-Oriented Programming   343 A Quick Recap of Protocols   343 Implementing Protocols   344 Introducing Protocol Extensions   344 Creating Protocol Extensions   346 What Is and Isn\'t Customizable   349 Type Constraints in Protocol Extensions   352 Homogeneous and Heterogeneous Collections   353 Converting Protocol Sequences   355 Summary   357 Q&A   357 Workshop   358 Exercise   359 HOUR 22: Handling Errors   361 Error Handling   361 Swift Error Handling   363 Summary   374 Q&A   375 Workshop   376 Exercise   376 HOUR 23: Adding Interoperability with Objective-C   377 Objective-C Basics   377 Bridging   384 Integrating Swift into an Objective-C App   387 Summary   399 Q&A   399 Workshop   400 Exercise   400 HOUR 24: Functional Thinking in Swift   403 What Is Functional Programming?   403 Thinking in Terms of Functions   404 Summary   418 Q&A   419 Workshop   419 Exercise   420 Index   421