iOS Knowledge (Swift)

This repo contains a collection of Swift knowledge

1. Dictionary
   dictionaries under the hood
   hash tables, hash functions
   linear probing and open addressing in creating hash tables

2. DispatchFramework
   CPU's then and now
   synchronous and asynchronnous tasks
   main, serial, concurrent, global, and custom queues
   quality of services class
   priority inversions
   networking using URLSession
   URLSession configurations
   URLSessionTask: URLSessionDataTask
   threads
   semaphores
   operations

3. Initializers
   stored properties
   ways to create initializers: cutomizing initializers, initializer parameters without argument labels, and default initializers
   convenience inits and designated inits

4. MemoryManagement
   automatic reference counting
   strong, weak, and unknowned values
   memory leak, debugging them, how they are bad
   retain cycles
   heaps and stacks with storing value and ref types

5. Ref-ValTypes
   reference types
   value types
   data structures that fall into each category
   mutability in reference and value types

6. AppArchitecture
   Model Layers
   View Layers
   Loops of an application
   A view state
   Creating extensions, child objects, extracting object to reduce code in a view controller
   RxSwift and RxCocoaNetworking

7. Intro
   Swift style guide
   Value and reference types
   Identity
   Functions

8. CollectionProtocols
   Sequence protocol
   Subsequence
   Iterator protocol
   Value semantics/Reference semantics
   Collection protocol
   ExpressibleByArrayLiteral protocol

9. Optionals
   Optional enum
   Unwrapping optionals

10. Passing Data
    Delegation pattern
    Notification center
    KVO
    Closures
    Instantiation / prepareForSegue

11. CoreBluetooth
    BLE devices
    Centrals
    Peripherals
    Services
    Characteristics

12. Swift Keywords
    Import declarations
    Constant, variable declarations
    Stored variables, stored variable observers
    Computed variables
    Stored type properties
    Computed type properties
    Instance properties
    Type Properties
    Type alias declaration