NBKit

NBKit is a collection of tools to make prototyping iOS apps easier.

Cache.swift

Cache is a dead simple way to cache objects temporarily to help reduce the amount of network requests. A great use-case is when you need to cache image data during a session.

Example of setting and getting:

if let lolcat = Cache.shared.get("lolcat.jpg") as? UIImage {
  // do something with cached image
} else {
  // load the image then cache it
  Cache.shared.set("lolcat.jpg", obj:myImage)
}

JSON.swift

JSON is a collection of enums, classes and functions for parsing JSON into pre-defined structs or classes that represent the data models you're choosing to work with. It's heavly inspired by this NSScreencast episode.

Example of a Book struct that implements the JSONDecode protocol:

struct Book: JSONDecode {
  let id:Int
  let title:String
  let plot:String?
  
  static func fromJSON(j:JSValue) -> Book? {
    switch j {
    case .JSObject(let d):
      return Book(
        id:     d["id"] >>> JSInt.fromJSON ?? 0,
        title:  d["title"] >>> JSString.fromJSON ?? "",
        plot:   d["plot"] >>> JSString.fromJSON
      )
    default:
      return nil
  }
}

Imagine you've made a request (using NSURLSession or Alamofire) for a list of books. You've probably got an NSData object so you'd do the following to convert it into an array of Book objects:

let json = JSValue.decode(data)
let books = json >>> JSArray<Book, Book>.fromJSON

Layout.swift

Layout is a more convenient way to programmatically work with Auto-Layout.

Example using a few pre-defined views within a view controller:

// Positions a button 44pt tall 128pt from the top of the screen 
// and fills the horizontal space with the standard 8pt of margin.
Layout(["submit": submitButton]).with([
  "H:|-[submit]-|",
  "V:|-128-[submit(44)]"
])

// Fills the entire horizontal and vertical space of the superview
Layout(["photo":myPhoto])
  .add("H:|[photo]|")
  .add("V:|[photo]|")

// Alternative
Layout.max(myPhoto)

Regex.swift

Regex is a more convenient way to work with regular expressions.

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Deprecated

• Parser.swift is deprecated—use JSON.swift.
• Request.swift is deprecated—use Alamofire.