dmsl1805

func countPairs(numbers: [Int], k: Int) -> Int {
    struct Pair: Equatable, Hashable {
        let lhs: Int
        let rhs: Int
        
        func isValid(k: Int) -> Bool {
            return lhs + k == rhs
        }
        
        static func ==(lhs: Pair, rhs: Pair) -> Bool {

dmsl1805

extension String {
  
  func snakeCased() -> String? {
    let pattern = "([a-z0-9])([A-Z])"

    let regex = try? NSRegularExpression(pattern: pattern, options: [])
    let range = NSRange(location: 0, length: count)
    return regex?.stringByReplacingMatches(in: self, options: [], range: range, withTemplate: "$1_$2").lowercased()
  }
}

dmsl1805

    

    func initializeDatabase() {
        let request = NSMutableURLRequest(url: NSURL(string: "\(apiURL)/statistics/")! as URL,
                                          cachePolicy: .useProtocolCachePolicy,
                                          timeoutInterval: 10.0)
        request.httpMethod = "POST"
        request.allHTTPHeaderFields = headers
        
        let session = URLSession.shared

dmsl1805

import UIKit

class ViewController: UIViewController {

    fileprivate let databaseURL = "postgres://nwritrny:VQJnfVmooh3S0TkAghEgA--YOxoaPJOR@stampy.db.elephantsql.com:5432/nwritrny"
    fileprivate let apiURL = "http://api.rutetiderframework.com"
    
    @IBAction func subscribeAction(_ sender: Any) {
        let headers = ["content-type": "application/x-www-form-urlencoded"]
        

dmsl1805

//
//  ContainerViewController.swift
//
//  Created by Dmitriy Shulzhenko on 1/15/17.
//  Copyright © 2017 Dmitriy Shulzhenko. All rights reserved.
//

import UIKit

class ContainerViewController: UIViewController {

dmsl1805

//
//  PersistentStorageController.swift
//
//  Created by Dmitriy Shulzhenko on 1/11/17.
//  Copyright © 2017 Dmitriy Shulzhenko. All rights reserved.
//

import CoreData

class PersistentStorageController: NSObject {