MVVM
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This document outlines the Model-View-ViewModel (MVVM) pattern and compares it to related patterns like MVC. It defines the key components in MVVM - the model, view, and view model. The view model acts as an adapter between the model and view, containing business logic and handling data binding. Benefits of MVVM include testable view models and a cleaner separation of concerns between the view/controller and underlying data/logic. ReactiveCocoa is mentioned as a framework that can provide the data bindings in MVVM. Core Data is one option for building the model/data layer.
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This document discusses improving table view data sources by implementing the single responsibility principle and using combinators. It outlines problems with traditional approaches where view controllers handle data sources and cells. The author advocates defining base data source classes that provide minimal functionality and combining them to add dynamic behaviors like filtering, reordering and indexing. Implementing this approach removes duplicate code, allows changing behavior through combinators, and makes data sources reusable across views. Examples of combinators that could be implemented are provided.
Elixir
An introduction into Elixir, a Ruby-like language built on Erlang. Demos at https://github.com/rob-brown/Elixir-Demos.
Reactive Cocoa
The basics of Reactive Cocoa. The tips and tricks in this presentation will cover almost all the use cases for Reactive Cocoa. Demo here: https://github.com/rob-brown/Demos/tree/master/RACDemo.
UIKit Dynamics
UIKit Dynamics is an animation framework in iOS that uses physics-based behaviors like gravity, collisions, attachments and forces to simulate real-world interactions. It includes behaviors for gravity, collisions, attachments, snapping and pushing. While not fully accurate physics, it allows composable animations through combining multiple behaviors. The document provides examples of behaviors and how to compose them, as well as limitations and resources for learning more.
iOS State Preservation and Restoration
Covers iOS app state preservation and restoration with extra emphasis on NSCoding. WWCD 2012 session 208 glosses over some of the fine details of how NSCoding works. Understanding this foundation better helps in understanding state preservation and restoration.
Anti-Patterns
This document discusses various anti-patterns and best practices in coding. It covers topics like avoiding magic numbers, proper use of #define, implicit type conversions, assertions, encapsulation, short and descriptive variable names, dead code, and name spacing. The key messages are to form good habits, optimize code for humans, learn rules well to know when to break them, avoid assumptions without assertions, and use proper encapsulation, short methods and naming.
Pragmatic blocks
For the best viewing experience, please download this presentation and view it in Keynote. SlideShare doesn't handle the animations well.
Blocks are a powerful language feature. However, they are underused and under-appreciated in Objective-C, especially compared to Ruby. My intent is to make blocks easy to understand and show many practical uses of blocks.
Automatic Reference Counting
ARC makes Objective-C development so much easier and enjoyable by eliminating almost all need to manually handle memory management.
Grand Central Dispatch Design Patterns
Grand Central Dispatch (GCD) and blocks make multi-threading easy. However, there are some lesser-known techniques that benefit your next project.
Grand Central Dispatch
Grand Central Dispatch (GCD) and blocks are a great tool that makes multi-threading easy, efficient, and enjoyable.
Mac/iOS Design Patterns
Getting started with Mac/iOS can be hard. This presentation helps you learn the common design patterns used by Cocoa and Cocoa Touch.
Quick Look for iOS
Ever wanted to preview files like Apple's Mail app does? Quick Look is an Apple framework that lets you do just that.
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
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MVVM
- 2. Outline 1. Core Data 2. Reactive Cocoa 3. MVVM
- 3. Core Data
- 4. What is Core Data? Intimidating An amazing data persistence framework Not a database
- 5. Core Data Layers XML SQLite Binary In Memory Custom NSPersistentStore NSPersistentStoreCoordinator NSManagedObjectModel NSManagedObjectContext NSManagedObject Application NSManagedObject Subclass
- 6. Core Data Stack Persistent Store Coordinator Managed Object Context(s) Persistent Store(s) Managed Object Model
- 7. More on Core Data Intro to Core Data Core Data: Data Storage Management for iOS, OS X, and iCloud RBCoreDataStack
- 9. What is Reactive Cocoa? Made by GitHub A functional reactive programming (FRP) framework Provides the bindings in MVVM
- 10. What is Reactive Cocoa? Binds properties together Eliminates the need for mutable state UI updates automatically as data changes
- 11. More on Reactive Cocoa Intro to Reactive Cocoa Functional Reactive Programming on iOS ReactiveCocoa
- 12. MVVM
- 13. What is MVVM? Model-View-ViewModel A variant of MVC Uses an adapter between the view and model
- 14. What is MVVM? View View Model Model Owns Owns UpdatesUpdates
- 15. What is MVVM? Data Model ViewModel Network ViewController View Data Storage
- 16. Application Stack ViewModel Network ViewController View SQLite Binary In Memory Custom NSPersistentStore NSPersistentStoreCoordinator NSManagedObjectModel NSManagedObjectContext NSManagedObject NSManagedObject Subclass XML
- 17. Model Represents the data layer Can be built with any technology Ex. Core Data, SQLite, JSON, PList, memory-only
- 18. View Handles layout and presentation of data In iOS, the “View” refers to both UIViews and UIViewControllers
- 19. ViewModel An adapter between the View and Model Contains all the business logic Uses bindings to pass data around
- 20. ViewModel Acts like a model Hides the real model logic from the view
- 21. ViewModel Some responsibilities: Kick off network and database requests Show/hide information Data/number formatting Localization
- 22. Benefits of MVVM View models are testable View models can be used like models View models are (mostly) platform-agnostic View and view controllers are simpler
- 23. Related Patterns Model Operation View Event (MOVE) Model View Presenter (MVP) Presentation Model (PM)
- 24. Questions?
- 25. Demo
- 26. Want to Learn More? ReactiveViewModel Functional Reactive Programming on iOS Wikipedia
- 27. Want to Learn More? ! Ash Furrow C-41 Functional Reactive Pixels