njdehoog

---
title: "BCU Covid-19 statistics"
output:
  pdf_document: default
  html_document: default
---

## Install dependencies

```{r}

njdehoog

custom_rules:
  developer_warning:
    included: ".*.swift"
    name: "Developer Warning"
    regex: "//\h*?(?i)warning" # matches '// WARNING' (case insensitive)
    match_kinds: comment
    message: "Fix before merging"
    severity: warning

njdehoog

### Keybase proof

I hereby claim:

  * I am njdehoog on github.
  * I am nielsdehoog (https://keybase.io/nielsdehoog) on keybase.
  * I have a public key ASCcwc48V8dVR844Z9Mgwyx4mn2j7clhigAIYKPFWj-vLgo

To claim this, I am signing this object:

njdehoog

class Foo: NSObject {
    private let bar = Bar()
    private var kvoContext = 0
    
    override init() {
        super.init()
        bar.addObserver(self, forKeyPath: "string", options: .New, context: &kvoContext)
        bar.string = "world"
    }
    

njdehoog

class Person {
    var name = Observable("John")
}

let person = Person()
person.name.subscribe() { oldValue, newValue in
    println("name changed: \(oldValue) to \(newValue)")
}
person.name.value = "Jane"

njdehoog

struct Observable<T> {
    typealias ValueType = T
    typealias SubscriptionType = Subscription<T>
    
    var value: ValueType {
        didSet {
            for subscription in subscriptions {
                let event = ValueChangeEvent(oldValue, value)
                subscription.notify(event)
            }

njdehoog

class KeyValueObserver: NSObject {
    typealias KeyValueObservingCallback = (change: [NSObject : AnyObject]) -> Void
    
    private let object: NSObject
    private let keyPath: String
    private let callback: KeyValueObservingCallback
    private var kvoContext = 0
    
    init(object: NSObject, keyPath: String, options: NSKeyValueObservingOptions, callback: KeyValueObservingCallback) {
        self.object = object

njdehoog

MKMapRect zoomRect = MKMapRectNull;
for (id <MKAnnotation> annotation in mapView.annotations) {
    MKMapPoint annotationPoint = MKMapPointForCoordinate(annotation.coordinate);
    MKMapRect pointRect = MKMapRectMake(annotationPoint.x, annotationPoint.y, 0, 0);
    if (MKMapRectIsNull(zoomRect)) {
        zoomRect = pointRect;
    } else {
        zoomRect = MKMapRectUnion(zoomRect, pointRect);
    }
}

njdehoog

//
//  NSObject+BlockObservation.h
//  Version 1.0
//
//  Andy Matuschak
//  andy@andymatuschak.org
//  Public domain because I love you. Let me know how you use it.
//

#import <Cocoa/Cocoa.h>