swift-snippet-13.swift

extension FileManager {

	static var documentsDirectory: URL {
		return FileManager
			.default
			.urls(for: .documentDirectory, in: .userDomainMask)
			.last!
	}
}

extension String {

	var fileName: String {
		return "your_app_unique_prefix_"
			+ self
			+ ".json"
	}

	var fileURL: URL {
		return FileManager
			.documentsDirectory
			.appendingPathComponent(fileName)
	}
}

extension URL {

	var fileContent: Data? {
		return FileManager
			.default
			.contents(atPath: path)
	}
}