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import Foundation
import RxSwift
import RxCocoa

class NewsManager {
    typealias NewsLoadState = LoadState<ArticlesResponse>

    enum LoadError: Error {
        case unknownError
    }

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import Foundation

enum LoadState<T> {
    case loading
    case updating
    case loaded(response: T)
    case failed(error: Error)
}

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extension ViewController: UITableViewDataSource {
    ...

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let tableViewCell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! NewsTableViewCell

        let article = articles[indexPath.row]
        tableViewCell.titleLabel.text = article.title
        tableViewCell.contentLabel.text = article.content

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import UIKit
import Alamofire

class ImageManager {

    private let session = Alamofire.Session()
    
    static let shared = ImageManager()

    func load(url: URLConvertible, completionHandler: @escaping (UIImage) -> Void) -> Void {

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extension ViewController: UITableViewDataSource {
    func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return articles.count
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

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extension ViewController: UITableViewDelegate {
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        let article = articles[indexPath.row]
        present(SFSafariViewController(url: article.url), animated: true, completion: nil)
    }
}

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// TODO: update the API key
private let apiKey: String = "c8707b3709a34bbe90837f63c71537ed"
private let path: String = "https://newsapi.org/v2/top-headlines?apiKey=\(apiKey)&country=us"

enum ClientError: Error {
    case missingResponseData
}

class NewsClient {
    func headlines() -> Single<ArticlesResponse> {

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import UIKit
import RxSwift
import SafariServices
class ViewController: UIViewController {
    
    private let disposeBag = DisposeBag()
    private let client = NewsClient()
    
    private var articles: [Article] = []
    

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import Foundation

class Article: Decodable {
    let title: String
    let description: String?
    let url: URL
    let urlToImage: String?
    let content: String?
}

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vertices, triangles = read_obj("teapot.obj")
x = vertices[:,0]
y = vertices[:,1]
z = vertices[:,2]
ax = plt.axes(projection='3d')
ax.set_xlim([-3, 3])
ax.set_ylim([-3, 3])
ax.set_zlim([0, 3])
ax.plot_trisurf(x, z, triangles, y, shade=True, color='white')