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func geNowPlaying(completion: @escaping (Result<MoviesPage, Error>) -> Void) { | |
URLSession.shared | |
.dataTask(with: url) { result in | |
completion( | |
result | |
.map(\.data) | |
.decode(MoviesPage.self, using: JSONDecoder()) | |
) | |
}.resume() | |
} |
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public protocol DecodableDataDecoder { | |
func decode<T>(_ type: T.Type, from data: Data) throws -> T where T: Decodable | |
} | |
extension JSONDecoder: DecodableDataDecoder {} | |
extension PropertyListDecoder: DecodableDataDecoder {} | |
public extension Result where Success == Data { | |
func decode<T: Decodable>(_ type: T.Type, using decoder: DecodableDataDecoder) -> Result<T, Error> { | |
do { |
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public extension Result where Success == (data: Data, response: URLResponse) { | |
func map<T>(_ keyPath: KeyPath<Success, T>) -> Result<T, Failure> { | |
switch self { | |
case .success(let response): | |
return .success(response[keyPath: keyPath]) | |
case .failure(let error): | |
return .failure(error) | |
} | |
} | |
} |
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public extension URLSession { | |
typealias DataTaskResult = Result<(data: Data, response: URLResponse), Error> | |
typealias DataTaskResultCompletion = (DataTaskResult) -> Void | |
func dataTask( | |
with url: URL, | |
completion: @escaping DataTaskResultCompletion | |
) -> URLSessionDataTask { | |
dataTask(with: url) { (data, response, error) in | |
if let error = error { |
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// Obj-C | |
- (NSURLSessionDataTask *)dataTaskWithURL:(NSURL *) | |
urlcompletionHandler:(void (^)( | |
NSData * _Nullable data, | |
NSURLResponse * _Nullable response, | |
NSError * _Nullable error) | |
)completionHandler; | |
// Swift | |
func dataTask( |
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URLSession.shared | |
.dataTaskPublisher(for: url) | |
.map(\.data) | |
.decode(type: MoviesPage.self, decoder: JSONDecoder()) |
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let url: URL = "https://api.themoviedb.org/3/movie/now_playing?api_key=\(apiKey)&page=1" | |
URLSession.shared | |
.dataTaskPublisher(for: url) | |
.map(\.data) | |
.decode(type: MoviesPage.self, decoder: JSONDecoder()) |
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import UIKit | |
public extension UIApplication { | |
/// Returns the topmost view controller in the hierarchy of the given view controller. | |
/// | |
/// If no parameter passed, by default the function takes the root view controller set for the key window in the application. | |
/// | |
/// ```swift | |
/// UIApplication.shared.keyWindow?.rootViewController | |
/// ``` |
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// Playground | |
protocol Option: RawRepresentable, Hashable, CaseIterable {} | |
extension Set where Element: Option { | |
var rawValue: Int { | |
var rawValue = 0 | |
for (index, element) in Element.allCases.enumerated() where contains(element) { | |
rawValue |= (1 << index) | |
} |
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extension KeyedDecodingContainer where Key: CodingKey { | |
func decodeDate(from key: Key, using formats: String...) throws -> Date { | |
let dateAsString = try decode(String.self, forKey: key) | |
let dateFormatter = DateFormatter() | |
for format in formats { | |
dateFormatter.dateFormat = format | |
guard let date = dateFormatter.date(from: dateAsString) else { | |
continue | |
} | |
return date |