| private enum ListNode<Element> { | |
| case End | |
| indirect case Node(Element, next: ListNode<Element>) | |
| func cons(x: Element) -> ListNode<Element> { | |
| return .Node(x, next: self) | |
| } | |
| } | |
| public struct ListIndex<Element> { |
| // A simple linked list using enums: | |
| enum List<Element> { | |
| case End | |
| indirect case Node(Element, List<Element>) | |
| func cons(x: Element) -> List<Element> { | |
| return .Node(x, self) | |
| } | |
| } |
Here's my own list of the interesting stuff announced during this year's WWDC, collected from the keynotes, various Apple docs, blog posts and tweets.
If you're planning to watch the videos, I really recommend this Mac app that helps you download and watch them: https://github.com/insidegui/WWDC.
http://www.apple.com/osx/elcapitan-preview/
| /// custom unique identifier | |
| /// @see https://www.firebase.com/blog/2015-02-11-firebase-unique-identifiers.html | |
| private let ASC_CHARS = Array("-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz") | |
| private let DESC_CHARS = ASC_CHARS.reverse() | |
| private var lastPushTime: UInt64 = 0 | |
| private var lastRandChars = Array<Int>(count: 12, repeatedValue: 0) | |
| func generatePushID(ascending: Bool = true) -> String { | |
| let PUSH_CHARS = ascending ? ASC_CHARS: DESC_CHARS | |
| var timeStampChars = Array<Character>(count: 8, repeatedValue: PUSH_CHARS.first!) |
| private var autoId: Int = 1 | |
| // MARK: Subscription Protocol | |
| protocol Subscription { | |
| func remove() | |
| } | |
| // MARK: AbstractSubscription<T> |
| import Random | |
| random(0 ..< 10) // Int | |
| random(1 ... 1000_000) // Int | |
| random(-1000_000 ... 1000_000) // Int | |
| random(Int.min ... Int.max) // Int | |
| randomMax(UInt64.max) // UInt64 | |
| random(0 ... UInt64.max) // UInt64 | |
| random(1 ... UInt(10)) // UInt |
| import Foundation | |
| /// An abstract class that makes building simple asynchronous operations easy. | |
| /// Subclasses must implement `execute()` to perform any work and call | |
| /// `finish()` when they are done. All `NSOperation` work will be handled | |
| /// automatically. | |
| open class AsynchronousOperation: Operation { | |
| // MARK: - Properties |
| /* | |
| In the node.js intro tutorial (http://nodejs.org/), they show a basic tcp | |
| server, but for some reason omit a client connecting to it. I added an | |
| example at the bottom. | |
| Save the following server in example.js: | |
| */ | |
| var net = require('net'); |
| { | |
| "chat": { | |
| // the list of chats may not be listed (no .read permissions here) | |
| // a chat conversation | |
| "$key": { | |
| // if the chat hasn't been created yet, we allow read so there is a way | |
| // to check this and create it; if it already exists, then authenticated | |
| // user (specified by auth.id) must be in $key/users |
| # xcode-build-bump.sh | |
| # @desc Auto-increment the build number every time the project is run. | |
| # @usage | |
| # 1. Select: your Target in Xcode | |
| # 2. Select: Build Phases Tab | |
| # 3. Select: Add Build Phase -> Add Run Script | |
| # 4. Paste code below in to new "Run Script" section | |
| # 5. Drag the "Run Script" below "Link Binaries With Libraries" | |
| # 6. Insure that your starting build number is set to a whole integer and not a float (e.g. 1, not 1.0) |
