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rickwierengarickwierenga
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Multiplatform App
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‎MultiplatformApp/HackerNews/.gitignore

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/HackerNews.xcodeproj/xcuserdata/
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/HackerNews.xcodeproj/project.xcworkspace/contents.xcworkspacedata
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/HackerNews.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
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/HackerNews.xcodeproj/project.xcworkspace/xcuserdata/rickwierenga.xcuserdatad/UserInterfaceState.xcuserstate

‎MultiplatformApp/HackerNews/HackerNews.xcodeproj/project.pbxproj

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‎MultiplatformApp/HackerNews/HackerNews.xcodeproj/project.xcworkspace/contents.xcworkspacedata

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‎MultiplatformApp/HackerNews/HackerNews.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>IDEDidComputeMac32BitWarning</key>
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<true/>
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</dict>
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</plist>

‎MultiplatformApp/HackerNews/Shared/Assets.xcassets/AccentColor.colorset/Contents.json

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{
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"colors" : [
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{
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"color" : {
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"platform" : "ios",
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"reference" : "systemOrangeColor"
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},
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"idiom" : "universal"
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}
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],
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"info" : {
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"author" : "xcode",
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"version" : 1
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}
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}

‎MultiplatformApp/HackerNews/Shared/Assets.xcassets/AppIcon.appiconset/Contents.json

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{
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"images" : [
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{
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"idiom" : "iphone",
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"scale" : "2x",
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"size" : "20x20"
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},
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{
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"idiom" : "iphone",
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"scale" : "3x",
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"size" : "20x20"
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},
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{
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"idiom" : "iphone",
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"scale" : "2x",
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"size" : "29x29"
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},
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{
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"idiom" : "iphone",
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"scale" : "3x",
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"size" : "29x29"
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},
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{
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"idiom" : "iphone",
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"scale" : "2x",
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"size" : "40x40"
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},
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{
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"idiom" : "iphone",
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"scale" : "3x",
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"size" : "40x40"
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},
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{
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"idiom" : "iphone",
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"scale" : "2x",
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"size" : "60x60"
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},
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{
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"idiom" : "iphone",
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"scale" : "3x",
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"size" : "60x60"
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},
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{
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"idiom" : "ipad",
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"scale" : "1x",
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"size" : "20x20"
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},
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{
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"idiom" : "ipad",
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"scale" : "2x",
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"size" : "20x20"
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},
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{
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"idiom" : "ipad",
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"scale" : "1x",
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"size" : "29x29"
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},
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{
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"idiom" : "ipad",
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"scale" : "2x",
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"size" : "29x29"
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},
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{
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"idiom" : "ipad",
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"scale" : "1x",
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"size" : "40x40"
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},
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{
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"idiom" : "ipad",
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"scale" : "2x",
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"size" : "40x40"
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},
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{
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"idiom" : "ipad",
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"scale" : "1x",
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"size" : "76x76"
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},
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{
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"idiom" : "ipad",
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"scale" : "2x",
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"size" : "76x76"
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},
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{
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"idiom" : "ipad",
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"scale" : "2x",
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"size" : "83.5x83.5"
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},
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{
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"idiom" : "ios-marketing",
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"scale" : "1x",
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"size" : "1024x1024"
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},
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{
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"idiom" : "mac",
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"scale" : "1x",
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"size" : "16x16"
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},
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{
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"idiom" : "mac",
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"scale" : "2x",
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"size" : "16x16"
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},
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{
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"idiom" : "mac",
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"scale" : "1x",
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"size" : "32x32"
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},
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{
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"idiom" : "mac",
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"scale" : "2x",
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"size" : "32x32"
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},
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{
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"idiom" : "mac",
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"scale" : "1x",
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"size" : "128x128"
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},
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{
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"idiom" : "mac",
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"scale" : "2x",
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"size" : "128x128"
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},
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{
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"idiom" : "mac",
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"scale" : "1x",
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"size" : "256x256"
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},
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{
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"idiom" : "mac",
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"scale" : "2x",
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"size" : "256x256"
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},
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{
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"idiom" : "mac",
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"scale" : "1x",
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"size" : "512x512"
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},
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{
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"idiom" : "mac",
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"scale" : "2x",
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"size" : "512x512"
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}
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],
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"info" : {
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"author" : "xcode",
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"version" : 1
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}
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}

‎MultiplatformApp/HackerNews/Shared/Assets.xcassets/Contents.json

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{
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"info" : {
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"author" : "xcode",
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"version" : 1
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}
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}

‎MultiplatformApp/HackerNews/Shared/HackerNews.swift

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//
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// HackerNews.swift
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// HackerNews
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//
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// Created by Rick Wierenga on 14/07/2020.
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//
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import Combine
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import Foundation
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final class HackerNews {
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private static let baseUrl = URL(string: "https://hacker-news.firebaseio.com/v0/")!
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static func loadItems(in category: Category) -> AnyPublisher<[ItemViewModel], HackerNewsError> {
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let url = baseUrl.appendingPathComponent("\(category.urlSuffix)stories.json")
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return URLSession.shared.dataTaskPublisher(for: url)
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.tryMap { response in
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if let httpURLResponse = response.response as? HTTPURLResponse,
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!(200...299 ~= httpURLResponse.statusCode) {
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throw HackerNewsError.message("Got an HTTP \(httpURLResponse.statusCode) error.")
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}
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return response.data
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}
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.decode(type: [Int].self, decoder: JSONDecoder())
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.map { $0[0..<30] } // Limit the number of items to 30 to limit the load on the API.
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.map { items in
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items.map { id in
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ItemViewModel(id: id)
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}
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}
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.mapError { HackerNewsError.map($0) }
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.eraseToAnyPublisher()
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}
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static func loadItem(withId id: Int) -> AnyPublisher<Item, HackerNewsError> {
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let url = baseUrl.appendingPathComponent("item/\(id).json")
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return URLSession.shared.dataTaskPublisher(for: url)
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.tryMap { response in
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if let httpURLResponse = response.response as? HTTPURLResponse,
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!(200...299 ~= httpURLResponse.statusCode) {
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throw HackerNewsError.message("Got an HTTP \(httpURLResponse.statusCode) error.")
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}
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return response.data
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}
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.decode(type: Item.self, decoder: JSONDecoder())
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.mapError { HackerNewsError.map($0) }
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.eraseToAnyPublisher()
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}
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}

‎MultiplatformApp/HackerNews/Shared/HackerNewsApp.swift

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//
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// HackerNewsApp.swift
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// Shared
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//
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// Created by Rick Wierenga on 14/07/2020.
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//
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import SwiftUI
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@main
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struct HackerNewsApp: App {
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var body: some Scene {
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WindowGroup {
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#if os(macOS)
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NavigationView {
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Sidebar()
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ItemsListView(viewModel: ItemsViewModel(category: .top))
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}
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#else
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NavigationView {
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TabBar()
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.navigationTitle("Hacker News")
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}.navigationViewStyle(StackNavigationViewStyle())
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#endif
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}
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}
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}

‎MultiplatformApp/HackerNews/Shared/Models/Category.swift

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//
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// Category.swift
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// HackerNews
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//
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// Created by Rick Wierenga on 14/07/2020.
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//
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import Foundation
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enum Category: String, CaseIterable, Identifiable {
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var id: String {
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return rawValue
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}
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case top
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case best
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case new
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case ask
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case show
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var name: String {
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switch self {
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case .best: return "Best"
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case .new: return "New"
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case .top: return "Top"
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case .ask: return "Ask HN"
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case .show: return "Show HN"
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}
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}
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var urlSuffix: String {
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return self.rawValue
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}
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var icon: String {
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switch self {
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case .best: return "rosette"
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case .new: return "clock"
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case .top: return "flame.fill"
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case .ask: return "questionmark.circle"
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case .show: return "eye"
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}
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}
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}

‎MultiplatformApp/HackerNews/Shared/Models/HackerNewsError.swift

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//
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// HackerNewsError.swift
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// HackerNews
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//
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// Created by Rick Wierenga on 14/07/2020.
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//
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import Foundation
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enum HackerNewsError: Error {
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case message(String)
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case other(Error)
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static func map(_ error: Error) -> HackerNewsError {
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return (error as? HackerNewsError) ?? .other(error)
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}
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}
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extension HackerNewsError: CustomStringConvertible {
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var description: String {
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switch self {
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case .message(let message):
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return message
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case .other(let error):
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return error.localizedDescription
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}
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}
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}

‎MultiplatformApp/HackerNews/Shared/Models/Item.swift

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//
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// Item.swift
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// HackerNews
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//
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// Created by Rick Wierenga on 14/07/2020.
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//
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import Foundation
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struct Item: Codable, Hashable {
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let id: Int
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let author: String
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let score: Int
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let date: Double
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let title: String
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let contentUrl: URL?
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private enum CodingKeys : String, CodingKey {
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case id
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case author = "by"
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case score
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case date = "time"
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case title
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case contentUrl = "url"
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}
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var formattedDate: String {
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// See https://nsdateformatter.com
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let dateFormatter = DateFormatter()
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dateFormatter.dateFormat = "MMM d, h:mm a"
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dateFormatter.locale = Locale(identifier: "en_US")
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return dateFormatter.string(from: Date(timeIntervalSince1970: date))
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}
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var url: URL {
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contentUrl ?? URL(string: "http://news.ycombinator.com/item?id=\(id)")!
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}
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}

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