Swift™ Notes for Professionals book

Content list
About
Chapter 1: Getting started with Swift Language
Section 1.1: Your first Swift program
Section 1.2: Your first program in Swift on a Mac (using a Playground)
Section 1.3: Your first program in Swift Playgrounds app on iPad
Section 1.4: Installing Swift
Section 1.5: Optional Value and Optional enum
Chapter 2: Variables & Properties
Section 2.1: Creating a Variable
Section 2.2: Property Observers
Section 2.3: Lazy Stored Properties
Section 2.4: Property Basics
Section 2.5: Computed Properties
Section 2.6: Local and Global Variables
Section 2.7: Type Properties
Chapter 3: Numbers
Section 3.1: Number types and literals
Section 3.2: Convert numbers to/from strings
Section 3.3: Rounding
Section 3.4: Random number generation
Section 3.5: Convert one numeric type to another
Section 3.6: Exponentiation
Chapter 4: Strings and Characters
Section 4.1: String & Character Literals
Section 4.2: Concatenate strings
Section 4.3: String Encoding and Decomposition
Section 4.4: Examine and compare strings
Section 4.5: Reversing Strings
Section 4.6: Check if String contains Characters from a Defined Set
Section 4.7: String Iteration
Section 4.8: Splitting a String into an Array
Section 4.9: Unicode
Section 4.10: Converting Swift string to a number type
Section 4.11: Convert String to and from Data / NSData
Section 4.12: Formatting Strings
Section 4.13: Uppercase and Lowercase Strings
Section 4.14: Remove characters from a string not defined in Set
Section 4.15: Count occurrences of a Character into a String
Section 4.16: Remove leading and trailing WhiteSpace and NewLine
Chapter 5: Booleans
Section 5.1: What is Bool?
Section 5.2: Booleans and Inline Conditionals
Section 5.3: Boolean Logical Operators
Section 5.4: Negate a Bool with the prefix ! operator
Chapter 6: Arrays
Section 6.1: Basics of Arrays
Section 6.2: Extracting values of a given type from an Array with flatMap(_:)
Section 6.3: Combining an Array's elements with reduce(_:combine:)
Section 6.4: Flattening the result of an Array transformation with flatMap(_:)
Section 6.5: Lazily flattening a multidimensional Array with flatten()
Section 6.6: Filtering out nil from an Array transformation with flatMap(_:)
Section 6.7: Subscripting an Array with a Range
Section 6.8: Removing element from an array without knowing it's index
Section 6.9: Sorting an Array of Strings
Section 6.10: Accessing indices safely
Section 6.11: Filtering an Array
Section 6.12: Transforming the elements of an Array with map(_:)
Section 6.13: Useful Methods
Section 6.14: Sorting an Array
Section 6.15: Finding the minimum or maximum element of an Array
Section 6.16: Modifying values in an array
Section 6.17: Comparing 2 Arrays with zip
Section 6.18: Grouping Array values
Section 6.19: Value Semantics
Section 6.20: Accessing Array Values
Chapter 7: Tuples
Section 7.1: What are Tuples?
Section 7.2: Decomposing into individual variables
Section 7.3: Tuples as the Return Value of Functions
Section 7.4: Using a typealias to name your tuple type
Section 7.5: Swapping values
Section 7.6: Tuples as Case in Switch
Chapter 8: Enums
Section 8.1: Basic enumerations
Section 8.2: Enums with associated values
Section 8.3: Indirect payloads
Section 8.4: Raw and Hash values
Section 8.5: Initializers
Section 8.6: Enumerations share many features with classes and structures
Section 8.7: Nested Enumerations
Chapter 9: Structs
Section 9.1: Structs are value types
Section 9.2: Accessing members of struct
Section 9.3: Basics of Structs
Section 9.4: Mutating a Struct
Section 9.5: Structs cannot inherit
Chapter 10: Sets
Section 10.1: Declaring Sets
Section 10.2: Performing operations on sets
Section 10.3: CountedSet
Section 10.4: Modifying values in a set
Section 10.5: Checking whether a set contains a value
Section 10.6: Adding values of my own type to a Set
Chapter 11: Dictionaries
Section 11.1: Declaring Dictionaries
Section 11.2: Accessing Values
Section 11.3: Change Value of Dictionary using Key
Section 11.4: Get all keys in Dictionary
Section 11.5: Modifying Dictionaries
Section 11.6: Merge two dictionaries
Chapter 12: Switch
Section 12.1: Switch and Optionals
Section 12.2: Basic Use
Section 12.3: Matching a Range
Section 12.4: Partial matching
Section 12.5: Using the where statement in a switch
Section 12.6: Matching Multiple Values
Section 12.7: Switch and Enums
Section 12.8: Switches and tuples
Section 12.9: Satisfy one of multiple constraints using switch
Section 12.10: Matching based on class - great for prepareForSegue
Section 12.11: Switch fallthroughs
Chapter 13: Optionals
Section 13.1: Types of Optionals
Section 13.2: Unwrapping an Optional
Section 13.3: Nil Coalescing Operator
Section 13.4: Optional Chaining
Section 13.5: Overview - Why Optionals?
Chapter 14: Conditionals
Section 14.1: Optional binding and "where" clauses
Section 14.2: Using Guard
Section 14.3: Basic conditionals: if-statements
Section 14.4: Ternary operator
Section 14.5: Nil-Coalescing Operator
Chapter 15: Error Handling
Section 15.1: Error handling basics
Section 15.2: Catching dierent error types
Section 15.3: Catch and Switch Pattern for Explicit Error Handling
Section 15.4: Disabling Error Propagation
Section 15.5: Create custom Error with localized description
Chapter 16: Loops
Section 16.1: For-in loop
Section 16.2: Repeat-while loop
Section 16.3: For-in loop with filtering
Section 16.4: Sequence Type forEach block
Section 16.5: while loop
Section 16.6: Breaking a loop
Chapter 17: Protocols
Section 17.1: Protocol Basics
Section 17.2: Delegate pattern
Section 17.3: Associated type requirements
Section 17.4: Class-Only Protocols
Section 17.5: Protocol extension for a specific conforming class
Section 17.6: Using the RawRepresentable protocol (Extensible Enum)
Section 17.7: Implementing Hashable protocol
Chapter 18: Functions
Section 18.1: Basic Use
Section 18.2: Functions with Parameters
Section 18.3: Subscripts
Section 18.4: Methods
Section 18.5: Variadic Parameters
Section 18.6: Operators are Functions
Section 18.7: Passing and returning functions
Section 18.8: Function types
Section 18.9: Inout Parameters
Section 18.10: Throwing Errors
Section 18.11: Returning Values
Section 18.12: Trailing Closure Syntax
Section 18.13: Functions With Closures
Chapter 19: Extensions
Section 19.1: What are Extensions?
Section 19.2: Variables and functions
Section 19.3: Initializers in Extensions
Section 19.4: Subscripts
Section 19.5: Protocol extensions
Section 19.6: Restrictions
Section 19.7: What are extensions and when to use them
Chapter 20: Classes
Section 20.1: Defining a Class
Section 20.2: Properties and Methods
Section 20.3: Reference Semantics
Section 20.4: Classes and Multiple Inheritance
Section 20.5: deinit
Chapter 21: Type Casting
Section 21.1: Downcasting
Section 21.2: Type casting in Swift Language
Section 21.3: Upcasting
Section 21.4: Example of using a downcast on a function parameter involving subclassing
Section 21.5: Casting with switch
Chapter 22: Generics
Section 22.1: The Basics of Generics
Section 22.2: Constraining Generic Placeholder Types
Section 22.3: Generic Class Examples
Section 22.4: Using Generics to Simplify Array Functions
Section 22.5: Advanced Type Constraints
Section 22.6: Generic Class Inheritance
Section 22.7: Use generics to enhance type-safety
Chapter 23: OptionSet
Section 23.1: OptionSet Protocol
Chapter 24: Reading & Writing JSON
Section 24.1: JSON Serialization, Encoding, and Decoding with Apple Foundation and the Swift Standard Library
Section 24.2: SwiftyJSON
Section 24.3: Freddy
Section 24.4: JSON Parsing Swift 3
Section 24.5: Simple JSON parsing into custom objects
Section 24.6: Arrow
Chapter 25: Advanced Operators
Section 25.1: Bitwise Operators
Section 25.2: Custom Operators
Section 25.3: Overflow Operators
Section 25.4: Commutative Operators
Section 25.5: Overloading + for Dictionaries
Section 25.6: Precedence of standard Swift operators
Chapter 26: Method Swizzling
Section 26.1: Extending UIViewController and Swizzling viewDidLoad
Section 26.2: Basics of Swift Swizzling
Section 26.3: Basics of Swizzling - Objective-C
Chapter 27: Reflection
Section 27.1: Basic Usage for Mirror
Section 27.2: Getting type and names of properties for a class without having to instantiate it
Chapter 28: Access Control
Section 28.1: Basic Example using a Struct
Section 28.2: Subclassing Example
Section 28.3: Getters and Setters Example
Chapter 29: Closures
Section 29.1: Closure basics
Section 29.2: Syntax variations
Section 29.3: Passing closures into functions
Section 29.4: Captures, strong/weak references, and retain cycles
Section 29.5: Using closures for asynchronous coding
Section 29.6: Closures and Type Alias
Chapter 30: Initializers
Section 30.1: Convenience init
Section 30.2: Setting default property values
Section 30.3: Customizing initialization with parameters
Section 30.4: Throwable Initilizer
Chapter 31: Associated Objects
Section 31.1: Property, in a protocol extension, achieved using associated object
Chapter 32: Concurrency
Section 32.1: Obtaining a Grand Central Dispatch (GCD) queue
Section 32.2: Concurrent Loops
Section 32.3: Running tasks in a Grand Central Dispatch (GCD) queue
Section 32.4: Running Tasks in an OperationQueue
Section 32.5: Creating High-Level Operations
Chapter 33: Getting Started with Protocol Oriented Programming
Section 33.1: Using protocols as first class types
Section 33.2: Leveraging Protocol Oriented Programming for Unit Testing
Chapter 34: Functional Programming in Swift
Section 34.1: Extracting a list of names from a list of Person(s)
Section 34.2: Traversing
Section 34.3: Filtering
Section 34.4: Using Filter with Structs
Section 34.5: Projecting
Chapter 35: Function as first class citizens in Swift
Section 35.1: Assigning function to a variable
Section 35.2: Passing function as an argument to another function, thus creating a Higher-Order Function
Section 35.3: Function as return type from another function
Chapter 36: Blocks
Section 36.1: Non-escaping closure
Section 36.2: Escaping closure
Chapter 37: The Defer Statement
Section 37.1: When to use a defer statement
Section 37.2: When NOT to use a defer statement
Chapter 38: Style Conventions
Section 38.1: Fluent Usage
Section 38.2: Clear Usage
Section 38.3: Capitalization
Chapter 39: NSRegularExpression in Swift
Section 39.1: Extending String to do simple pattern matching
Section 39.2: Basic Usage
Section 39.3: Replacing Substrings
Section 39.4: Special Characters
Section 39.5: Validation
Section 39.6: NSRegularExpression for mail validation
Chapter 40: RxSwift
Section 40.1: Disposing
Section 40.2: RxSwift basics
Section 40.3: Creating observables
Section 40.4: Bindings
Section 40.5: RxCocoa and ControlEvents
Chapter 41: Swift Package Manager
Section 41.1: Creation and usage of a simple Swift package
Chapter 42: Working with C and Objective-C
Section 42.1: Use a module map to import C headers
Section 42.2: Using Objective-C classes from Swift code
Section 42.3: Specify a bridging header to swiftc
Section 42.4: Use the C standard library
Section 42.5: Fine-grained interoperation between Objective-C and Swift
Section 42.6: Using Swift classes from Objective-C code
Chapter 43: Documentation markup
Section 43.1: Class documentation
Section 43.2: Documentation styles
Chapter 44: Typealias
Section 44.1: typealias for closures with parameters
Section 44.2: typealias for empty closures
Section 44.3: typealias for other types
Chapter 45: Dependency Injection
Section 45.1: Dependency Injection with View Controllers
Section 45.2: Dependency Injection Types
Chapter 46: Caching on disk space
Section 46.1: Reading
Section 46.2: Saving
Chapter 47: Algorithms with Swift
Section 47.1: Sorting
Section 47.2: Insertion Sort
Section 47.3: Selection sort
Section 47.4: Asymptotic analysis
Section 47.5: Quick Sort - O(n log n) complexity time
Section 47.6: Graph, Trie, Stack
Chapter 48: Swift Advance functions
Section 48.1: Flatten multidimensional array
Section 48.2: Introduction with advance functions
Chapter 49: Completion Handler
Section 49.1: Completion handler with no input argument
Section 49.2: Completion handler with input argument
Chapter 50: Swift HTTP server by Kitura
Section 50.1: Hello world application
Chapter 51: Generate UIImage of Initials from String
Section 51.1: InitialsImageFactory
Chapter 52: Design Patterns - Creational
Section 52.1: Singleton
Section 52.2: Builder Pattern
Section 52.3: Factory Method
Section 52.4: Observer
Section 52.5: Chain of responsibility
Section 52.6: Iterator
Chapter 53: Design Patterns - Structural
Section 53.1: Adapter
Section 53.2: Facade
Chapter 54: (Unsafe) Buer Pointers
Section 54.1: UnsafeMutablePointer
Section 54.2: Practical Use-Case for Buer Pointers
Chapter 55: Cryptographic Hashing
Section 55.1: HMAC with MD5, SHA1, SHA224, SHA256, SHA384, SHA512 (Swift 3)
Section 55.2: MD2, MD4, MD5, SHA1, SHA224, SHA256, SHA384, SHA512 (Swift 3)
Chapter 56: AES encryption
Section 56.1: AES encryption in CBC mode with a random IV (Swift 3.0)
Section 56.2: AES encryption in CBC mode with a random IV (Swift 2.3)
Section 56.3: AES encryption in ECB mode with PKCS7 padding
Chapter 57: PBKDF2 Key Derivation
Section 57.1: Password Based Key Derivation 2 (Swift 3)
Section 57.2: Password Based Key Derivation 2 (Swift 2.3)
Section 57.3: Password Based Key Derivation Calibration (Swift 2.3)
Section 57.4: Password Based Key Derivation Calibration (Swift 3)
Chapter 58: Logging in Swift
Section 58.1: dump
Section 58.2: Debug Print
Section 58.3: print() vs dump()
Section 58.4: print vs NSLog
Chapter 59: Memory Management
Section 59.1: Reference Cycles and Weak References
Section 59.2: Manual Memory Management
Chapter 60: Performance
Section 60.1: Allocation Performance
Credits
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