book

Swift OS X Programming for Absolute Beginners

by Wallace Wang

August 2015

Beginner

572 pages

12h 22m

English

Apress

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Programming PrinciplesStructured ProgrammingEvent-Driven ProgrammingObject-Oriented ProgrammingEncapsulationInheritancePolymorphismUnderstanding Programming LanguagesThe Cocoa FrameworkThe View-Model-Controller DesignHow Programmers WorkSummary
Giving Commands to XcodeModifying the Xcode WindowCreating and Managing FilesCreating and Customizing a User InterfaceThe Standard and Assistant EditorsRunning a ProgramSummary
Creating a ProjectDesigning a User InterfaceUsing the Document Outline and Connections InspectorSummary
Understanding the Cocoa FrameworkLooking Up Properties and Methods in a Class FileLooking Up Class Files with the Help MenuLooking Up Class Files with Quick HelpBrowsing the DocumentationSearching the DocumentationUsing Code CompletionUnderstanding How OS X Programs WorkSummary
Using PlaygroundsCreating Comments in SwiftStoring Data in SwiftTypealiasesUsing Unicode Characters as NamesConverting Data TypesComputed PropertiesUsing Optional VariablesLinking Swift Code to a User InterfaceSummary
Using Mathematical OperatorsPrefix and Postfix OperatorsCompound Assignment OperatorsUsing Math FunctionsRounding FunctionsCalculation FunctionsTrigonometry FunctionsExponential FunctionsLogarithmic FunctionsUsing String FunctionsCreating FunctionsSimple Functions Without Parameters or Return ValuesSimple Functions With ParametersFunctions With Parameters That Return ValuesDefining External Parameter NamesUsing Variable ParametersUsing Inout ParametersUnderstanding IBAction MethodsSummary
Understanding Comparison OperatorsUnderstanding Logical OperatorsThe if StatementThe if-else StatementThe if-else if StatementThe switch StatementUsing the switch Statement with enum Data StructuresMaking Decisions in an OS X ProgramSummary
The while LoopThe repeat-while LoopThe for Loop That CountsThe for-in StatementExiting Loops PrematurelyUsing Loops in an OS X ProgramSummary
Using ArraysAdding Items to an ArrayDeleting Items From an ArrayQuerying ArraysManipulating ArraysUsing DictionariesAdding Items to a DictionaryRetrieving and Updating Data in a DictionaryDeleting Data in a DictionaryQuerying a DictionaryUsing Dictionaries in an OS X ProgramSummary
Using TuplesAccessing Data in a TupleUsing SetsCreating a SetAdding and Removing Items from a SetQuerying a SetManipulating SetsUsing StructuresStoring and Retrieving Items from a StructureUsing Structures in an OS X ProgramSummary
Creating ClassesAccessing Properties in an ObjectComputed Properties in an ObjectSetting Other PropertiesUsing Property ObserversCreating MethodsUsing Objects in an OS X ProgramSummary
Understanding InheritanceUnderstanding PolymorphismOverriding PropertiesPreventing PolymorphismUsing ExtensionsUsing ProtocolsDefining Optional Methods and Properties in ProtocolsUsing Inheritance with ProtocolsUsing DelegatesUsing Inheritance in an OS X ProgramSummary
Understanding User Interface FilesSearching the Object LibraryUser Interface Items That Display and Accept TextUser Interface Items That Restrict ChoicesUser Interface Items That Accept CommandsUser Interface Items That Groups ItemsUsing Constraints in Auto LayoutDefining Window SizesPlacing Constraints on User Interface ItemsEditing ConstraintsDefining Constraints in an OS X ProgramSummary
Creating User Interface FilesAdding an .xib or .storyboard FileDefining the Main User InterfaceDisplaying Multiple .xib FilesUsing StoryboardsZooming In and Out of a StoryboardAdding Scenes to a StoryboardDefining the Initial Scene in a StoryboardConnecting Scenes with SeguesDisplaying Scenes From a SegueRemoving a Scene After a SeguePassing Data Between ScenesSummary
Modifying Text on a ButtonAdding Images and Sounds to a ButtonConnecting Multiple User Interface Items to IBAction MethodsWorking with Pop-Up ButtonsModifying Pop-Up Menu Items VisuallyAdding Pop-Up Menu Items with Swift CodeSummary
Using Check BoxesUsing Radio ButtonsUsing a Date PickerUsing SlidersSummary
Using Text FieldsUsing a Number FormatterUsing a Secure Text Field, a Search Field, and a Token FieldUsing Combo BoxesCreating an Internal ListUsing a Data SourceSummary
Using AlertsGetting Feedback from an AlertDisplaying Alerts as SheetsUsing PanelsCreating an Open PanelCreating a Save PanelSummary
Editing Pull-Down MenusAdding New Pull-Down Menu Titles to the Menu BarAdding New Commands to a Pull-Down MenuEditing CommandsConnecting Menu Commands to Swift CodeSummary
Understanding ProtocolsUsing Methods in ProtocolsAdopting Multiple ProtocolsProtocol ExtensionsUsing Protocol Extensions to Extend Common Data TypesSummary
Test with Extreme ValuesBe Careful with Language ShortcutsWorking with Optional VariablesWorking with Optional ChainingError HandlingDefining Errors with enum and ErrorTypeCreating a Function to Identify ErrorsHandling the ErrorSummary
Using Stack ViewFixing Constraint ConflictsWorking with Storyboard ReferencesSummary
Simple Debugging TechniquesUsing the Xcode DebuggerUsing BreakpointsStepping Through CodeManaging BreakpointsUsing Symbolic BreakpointsUsing Conditional BreakpointsTroubleshooting Breakpoints in XcodeSummary
Identifying the Purpose of Your ProgramDesigning the Structure of a ProgramDesigning the User Interface of a ProgramDesign a User Interface with Paper and PencilDesign a User Interface with SoftwareMarketing Your SoftwareBlogging About Your SoftwareGiving Away Free SoftwarePosting Videos About Your SoftwareGive Away Free InformationJoin Social NetworksSummary

Content preview from Swift OS X Programming for Absolute Beginners

Chapter 7

Making Decisions with Branches

After a program receives data, it needs to manipulate that data somehow to return a useful result. Simple programs manipulate data the same way, but more complicated programs need to make decisions on how to manipulate that data.

For example, a program might ask the user for a password. If the user types in a valid password, then the program gives the user access. If the user does not type in a valid password, then the program must display an error message and block access.

When a program analyzes data and makes a decision based on that data, it uses something called Boolean values and branching statements.

Boolean values represent either a true or false value. Branching statements give your program ...

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Swift OS X Programming for Absolute Beginners

by Wallace Wang

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Publisher Resources

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.