We'll be creating a new Virtual Machine on Microsoft's cloud platform, Azure. The VM will have a beefy GPU just like a home computer so it can be used for playing games.
State machines are everywhere in interactive systems, but they're rarely defined clearly and explicitly. Given some big blob of code including implicit state machines, which transitions are possible and under what conditions? What effects take place on what transitions?
There are existing design patterns for state machines, but all the patterns I've seen complect side effects with the structure of the state machine itself. Instances of these patterns are difficult to test without mocking, and they end up with more dependencies. Worse, the classic patterns compose poorly: hierarchical state machines are typically not straightforward extensions. The functional programming world has solutions, but they don't transpose neatly enough to be broadly usable in mainstream languages.
Here I present a composable pattern for pure state machiness with effects,
| // | |
| // DON'T do this, or else you risk a deadlock (e.g., by accidentally performing it in a different order somewhere) | |
| // | |
| dispatch_async(firstQueue, ^{ | |
| dispatch_sync(secondQueue, ^{ | |
| // code requiring both queues | |
| }); | |
| }); |
| class Thunder { } | |
| class Fire { } | |
| protocol Pokemon { | |
| typealias PokemonType | |
| func attack(move:PokemonType) | |
| } | |
| struct Pikachu: Pokemon { | |
| typealias PokemonType = Thunder |
| // | |
| // UILabel+JumpingDots.swift | |
| // JumpingDots | |
| // | |
| // Copyright (c) 2016 Arkadiusz Holko. All rights reserved. | |
| // | |
| import UIKit | |
| import ObjectiveC |
| protocol StackType { | |
| typealias Element | |
| mutating func push(element: Element) | |
| mutating func pop() -> Element? | |
| } | |
| final class BufferStorage<Element> { | |
| private var ptr: UnsafeMutablePointer<Element> | |
| private let capacity: Int |
| // Swift Standard Librray - String | |
| // Keith Harrison http://useyourloaf.com | |
| // Import Foundation if you want to bridge to NSString | |
| import Foundation | |
| // ==== | |
| // Initializing a String | |
| // ==== |
| <?xml version="1.0" encoding="UTF-8"?> | |
| <Bucket | |
| type = "2" | |
| version = "2.0"> | |
| <Breakpoints> | |
| <!-- All Exceptions --> | |
| <BreakpointProxy | |
| BreakpointExtensionID = "Xcode.Breakpoint.ExceptionBreakpoint"> | |
| <BreakpointContent |
| // Taken from the commercial iOS PDF framework http://pspdfkit.com. | |
| // Copyright (c) 2014 Peter Steinberger, PSPDFKit GmbH. All rights reserved. | |
| // Licensed under MIT (http://opensource.org/licenses/MIT) | |
| // | |
| // You should only use this in debug builds. It doesn't use private API, but I wouldn't ship it. | |
| // PLEASE DUPE rdar://27192338 (https://openradar.appspot.com/27192338) if you would like to see this in UIKit. | |
| #import <objc/runtime.h> | |
| #import <objc/message.h> |
