Swift Playground with map

NationalWeatherService.playground/Contents.swift

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+//: A MapKit based Playground
+
+import MapKit
+import NationalWeatherService
+import CoreLocation
+import PlaygroundSupport
+
+
+let nws = NationalWeatherService(userAgent: "(github.com/WeatherProvider, NationalWeatherService-Swift)")
+let location = CLLocationCoordinate2DMake(47.6174, -122.2017)  // Bellvue, Washington
+
+// Create a map annotation
+let annotation = MKPointAnnotation()
+
+annotation.coordinate = location
+annotation.title = "title"
+annotation.subtitle = "subtitle"
+
+// Gets the forecast, organized into time periods (such as Afternoon, Evening, etc).
+NationalWeatherService.units = .fahrenheit
+nws.forecast(for: location) { result in
+  switch result {
+    case .success(let forecast):
+      print(forecast)
+
+      let period = forecast.periods.first!
+      print(period)
+
+      print(period.shortForecast)
+      annotation.title = period.shortForecast
+
+      print(period.detailedForecast)
+      annotation.subtitle = period.detailedForecast
+
+    case .failure(let error):
+      print(error)
+  }
+}
+
+// Now let's create a MKMapView
+let mapView = MKMapView(frame: CGRect(x:0, y:0, width:640, height:480))
+
+// Define a region for our map view
+var mapRegion = MKCoordinateRegion()
+
+let mapRegionSpan = 0.2
+mapRegion.center = location
+mapRegion.span.latitudeDelta = mapRegionSpan
+mapRegion.span.longitudeDelta = mapRegionSpan
+
+mapView.setRegion(mapRegion, animated: true)
+
+mapView.addAnnotation(annotation)
+
+// Add the created mapView to our Playground Live View
+PlaygroundPage.current.liveView = mapView

NationalWeatherService.playground/contents.xcplayground

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+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<playground version='5.0' target-platform='ios' buildActiveScheme='true' executeOnSourceChanges='false' importAppTypes='true'>
+    <timeline fileName='timeline.xctimeline'/>
+</playground>

NationalWeatherService.playground/timeline.xctimeline

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+<?xml version="1.0" encoding="UTF-8"?>
+<Timeline
+   version = "3.0">
+   <TimelineItems>
+   </TimelineItems>
+</Timeline>