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let tableViewDataSource = users
    .filter { $0.age > 21 && $0.name != "Simon" && $0.phone.contains("iPhone") }
    .map { ViewModel(cellTitle: $0.name, cellSubtitle: $0.phone) }

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class RingEditViewModel: ObservableObject {

    @NestedObservableObject var ring: RingData

    private let isEditing: Bool
    private let temporaryContext: NSManagedObjectContext

    init(context: NSManagedObjectContext, ring: RingData? = nil) {
        self.temporaryContext = context.child()
        if let ring = temporaryContext.copy(of: ring) {

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//
//  Combine+Extensions.swift
//  Common
//
//  Created by Michael Long on 8/27/22.
//

import Foundation
import Combine

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struct ToDo: Codable, Identifiable {
    let id: Int
    let userId: Int
    var title: String
    var completed: Bool
}

class SelectionManager<Item: Identifiable>: ObservableObject {
    @Published var status: [Item.ID:Bool] = [:]
    func isSelected(_ item: Item) -> Bool {

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struct ToDoStore: Codable {
    let userId: Int
    let id: Int
    var title: String
    var completed: Bool
}

struct ToDo {

    private var toDo: ToDoStore

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struct NameValueView: ViewBuilder {

    let name: String?
    let value: String?

    var body: View {
        HStackView {
            LabelView(name)
                .color(.secondaryLabel)
            SpacerView()

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struct LabeledPhotoView: ViewBuilder {
    
    let photo: Observable<UIImage?>
    let name: String

    var body: View {
        ZStackView {
            ImageView(photo)
                .contentMode(.scaleAspectFill)
                .clipsToBounds(true)

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struct DetailCardView: ViewBuilder {    

    @Injected var viewModel: DetailViewModel

    init(user: User) {
        viewModel.configure(user)
    }

    var body: View {
        StandardCardView {

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struct Colors {
    let primary: Color
}

struct Fonts {
    let body: Font
}

class Theme: ObservableObject {
    let color: Colors

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struct LoadingView: View {

    @StateObject var viewModel = ViewModel()

    var body: some View {
        switch viewModel.state {
        case .initial, .loading:
            ProgressView()
                .onAppear(perform: viewModel.load)
        case .empty(let message):