Essential Swift

Getting started
- Getting started with Swift Language
- Your first Swift program
- Your first program in Swift on a Mac using a Playground
- Installing Swift
- Your first program in Swift Playgrounds app on iPad
- Optional Value and Optional enum
Switch
- Switch
- Switch and Optionals
- Basic Use
- Using the where statement in a switch
- Partial matching
- Matching a Range
- Matching Multiple Values
- Satisfy one of multiple constraints using switch
- Switch and Enums
- Switches and tuples
- Matching based on class - great for prepareForSegue
- Switch fallthroughs
JSON
- Reading Writing JSON
- JSON Serialization Encoding and Decoding with Apple Foundation and the Swift Standard Library
- SwiftyJSON
- Freddy
- Simple JSON parsing into custom objects
- JSON Parsing Swift 3
- Arrow
Enums
- Enums
- Basic enumerations
- Enums with associated values
- Indirect payloads
- Raw and Hash values
- Initializers
- Enumerations share many features with classes and structures
- Nested Enumerations
Protocols
- Protocols
- Protocol Basics
- Delegate pattern
- Associated type requirements
- Class-Only Protocols
- Protocol extension for a specific conforming class
- Using the RawRepresentable protocol Extensible Enum
- Implementing Hashable protocol
Structs
- Structs
- Structs are value types
- Basics of Structs
- Mutating a Struct
- Structs cannot inherit
- Accessing members of struct
Closures
- Closures
- Closure basics
- Syntax variations
- Passing closures into functions
- Captures strongweak references and retain cycles
- Using closures for asynchronous coding
- Closures and Type Alias
Error Handling
- Error Handling
- Error handling basics
- Catching different error types
- Catch and Switch Pattern for Explicit Error Handling
- Disabling Error Propagation
- Create custom Error with localized description
Arrays
- Arrays
- Basics of Arrays
- Extracting values of a given type from an Array with flatMap
- Flattening the result of an Array transformation with flatMap
- Combining an Arrays elements with reduce combine
- Lazily flattening a multidimensional Array with flatten
- Filtering out nil from an Array transformation with flatMap
- Subscripting an Array with a Range
- Removing element from an array without knowing its index
- Sorting an Array of Strings
- Accessing indices safely
- Filtering an Array
- Finding the minimum or maximum element of an Array
- Sorting an Array
- Transforming the elements of an Array with map
- Useful Methods
- Value Semantics
- Grouping Array values
- Modifying values in an array
- Accessing Array Values
- Comparing 2 Arrays with zip
Dictionaries
- Dictionaries
- Declaring Dictionaries
- Accessing Values
- Change Value of Dictionary using Key
- Modifying Dictionaries
- Get all keys in Dictionary
- Merge two dictionaries
Extensions
- Extensions
- What are Extensions
- Variables and functions
- Initializers in Extensions
- Protocol extensions
- Subscripts
- Restrictions
- What are extensions and when to use them
Sets
- Sets
- Declaring Sets
- Performing operations on sets
- CountedSet
- Modifying values in a set
- Checking whether a set contains a value
- Adding values of my own type to a Set
Working with C and Objective-C
- Working with C and Objective-C
- Use a module map to import C headers
- Using Objective-C classes from Swift code
- Specify a bridging header to swiftc
- Fine-grained interoperation between Objective-C and Swift
- Use the C standard library
- Using Swift classes from Objective-C code
Functions
- Functions
- Basic Use
- Methods
- Functions with Parameters
- Subscripts
- Operators are Functions
- Variadic Parameters
- Throwing Errors
- Inout Parameters
- Returning Values
- Functions With Closures
- Passing and returning functions
- Function types
- Trailing Closure Syntax
Numbers
- Numbers
- Number types and literals
- Convert numbers tofrom strings
- Rounding
- Convert one numeric type to another
- Random number generation
- Exponentiation
Classes
- Classes
- Defining a Class
- Properties and Methods
- Reference Semantics
- Classes and Multiple Inheritance
- deinit
Conditionals
- Conditionals
- Optional binding and where clauses
- Using Guard
- Basic conditionals if-statements
- Ternary operator
- Nil-Coalescing Operator
Variables, properties
- Variables Properties
- Creating a Variable
- Property Observers
- Lazy Stored Properties
- Property Basics
- Computed Properties
- Local and Global Variables
- Type Properties
- Strings and characters
Optionals
- Optionals
- Types of Optionals
- Unwrapping an Optional
- Nil Coalescing Operator
- Optional Chaining
- Overview - Why Optionals
Tuples
- Tuples
- What are Tuples
- Decomposing into individual variables
- Tuples as the Return Value of Functions
- Using a typealias to name your tuple type
- Swapping values
- Tuples as Case in Switch
Booleans
- Booleans
- What is Bool
- Booleans and Inline Conditionals
- Negate a Bool with the prefix operator
- Boolean Logical Operators
Memory management
- Memory Management
- Reference Cycles and Weak References
- Manual Memory Management
Generics
- Generics
- The Basics of Generics
- Constraining Generic Placeholder Types
- Generic Class Examples
- Using Generics to Simplify Array Functions
- Generic Class Inheritance
- Use generics to enhance type-safety
- Advanced Type Constraints
Advanced operators
- Advanced Operators
- Bitwise Operators
- Custom Operators
- Commutative Operators
- Overflow Operators
- Overloading for Dictionaries
- Precedence of standard Swift operators
Access control
- Access Control
- Basic Example using a Struct
- Subclassing Example
- Getters and Setters Example
Associated objects
- Associated Objects
- Property in a protocol extension achieved using associated object.
Loops
- Loops
- For-in loop
- Repeat-while loop
- For-in loop with filtering
- Sequence Type forEach block
- while loop
- Breaking a loop
Reflection
- Reflection
- Basic Usage for Mirror
- Getting type and names of properties for a class without having to instantiate it
OptionSet
- OptionSet
- OptionSet Protocol
Method swizzling
- Method Swizzling
- Extending UIViewController and Swizzling viewDidLoad
- Basics of Swift Swizzling
- Basics of Swizzling - Objective-C
Concurrency
- Concurrency
- Obtaining a Grand Central Dispatch GCD queue
- Concurrent Loops
- Running tasks in a Grand Central Dispatch GCD queue
- Running Tasks in an OperationQueue
- Creating High-Level Operations
Initializers
- Initializers
- Setting default property values
- Customizing initialization with paramaters
- Convenience init
- Throwable Initilizer
Getting started with Protocol Oriented Programming
- Getting Started with Protocol Oriented Programming
- Leveraging Protocol Oriented Programming for Unit Testing
- Using protocols as first class types
Functional programming
- Functional Programming in Swift
- Extracting a list of names from a list of Persons
- Traversing
- Filtering
- Using Filter with Structs
- Projecting
Style convent
- Style Conventions
- Fluent Usage
- Clear Usage
- Capitalization
Type casting
- Type Casting
- Downcasting
- Type casting in Swift Language
- Casting with switch
- Upcasting
- Example of using a downcast on a function parameter involving subclassing
Logging in Swift
- Logging in Swift
- dump
- Debug Print
- print vs dump
- print vs NSLog
Performance
- Performance
- Allocation Performance
RxSwift
- RxSwift
- Disposing
- RxSwift basics
- Creating observables
- Bindings
- RxCocoa and ControlEvents
The defer statement
- The Defer Statement
- When to use a defer statement
- When NOT to use a defer statement
Design Patterns - Creational
- Design Patterns - Creational
- Singleton
- Builder Pattern
- Factory Method
- Observer
- Chain of responsibility
- Iterator
Swift Package Manager
- Swift Package Manager
- Creation and usage of a simple Swift package
NSRegularExpression
- NSRegularExpression in Swift
- Extending String to do simple pattern matching
- Basic Usage
- NSRegularExpression for mail validation
- Replacing Substrings
- Special Characters
- Validation
Documentation markup
- Documentation markup
- Class documentation
- Documentation styles
AES encryption
- AES encryption
- AES encryption in CBC mode with a random IV Swift 3.0
- AES encryption in CBC mode with a random IV Swift 2.3
- AES encryption in ECB mode with PKCS7 padding
PBKDF2 key derivation
- PBKDF2 Key Derivation
- Password Based Key Derivation 2 Swift 3
- Password Based Key Derivation 2 Swift 2.3
- Password Based Key Derivation Calibration Swift 2.3
- Password Based Key Derivation Calibration Swift 3
Typealias
- Typealias
- typealias for closures with parameters
- typealias for empty closures
- typealias for other types
Cryptographic hashing
- Cryptographic Hashing
- HMAC with MD5 SHA1 SHA224 SHA256 SHA384 SHA512 Swift 3
- MD2 MD4 MD5 SHA1 SHA224 SHA256 SHA384 SHA512 Swift 3
Dependency Injection
- Dependency Injection
- Dependency Injection with View Controllers
- Dependency Injection Types
Functions as first class citizens
- Function as first class citizens in Swift
- Assigning function to a variable
- Passing function as an argument to another function thus creating a Higher-Order Function
- Function as return type from another function
Blocks
- Blocks
- Non-escaping closure
- Escaping closure
Caching on disk space
- Caching on disk space
- Reading
- Saving
Algorithms with Swift
- Algorithms with Swift
- Sorting
- Insertion Sort
- Selection sort
- Asymptotic analysis
- Quick Sort - On log n complexity time
- Graph Trie Stack
Unsafe buffer pointers
- Unsafe Buffer Pointers
- UnsafeMutablePointer
- Practical Use-Case for Buffer Pointers
Swift Advance functions
- Swift Advance functions
- Flatten multidimensional array
- Introduction with advance functions
Completion Handler
- Completion Handler
- Completion handler with no input argument
- Completion handler with input argument
Design Patterns - Structural
- Design Patterns - Structural
- Adapter
- Facade
Swift HTTP server by Kitura
- Swift HTTP server by Kitura
- Hello world application
Generate UIImage of Initials from string
- Generate UIImage of Initials from String
- InitialsImageFactory
Contributors

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