vialyx

let dateIntervalFormatter = DateIntervalFormatter()
dateIntervalFormatter.dateStyle = .medium
dateIntervalFormatter.timeStyle = .short

let timeIntervalUntilEndDate: TimeInterval = 67490
let startDate = Date()
let endDate = startDate.addingTimeInterval(timeIntervalUntilEndDate)

let formattedIntervalString = dateIntervalFormatter.string(from: startDate, to: endDate)
print("Formatted TimeInterval: \(formattedIntervalString)")

vialyx

let isoDateFormatter = ISO8601DateFormatter()
print("ISO8601 string: \(isoDateFormatter.string(from: Date()))")
// ISO8601 string: 2018-03-21T19:11:46Z

vialyx

let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "DD.MM.YYYY hh:mm:ss"
print("Date string: \(dateFormatter.string(from: Date()))")
// Date string: 80.03.2018 10:16:07

vialyx

let number = NSNumber(value: 1231.90)
let numberFormatter = NumberFormatter()
guard let formattedNumber = numberFormatter.string(from: number) else { fatalError() }
print("Formatted rounded Number: \(formattedNumber)")
// Formatted rounded Number: 1232

numberFormatter.numberStyle = .currency
guard let formattedCurrency = numberFormatter.string(from: number) else { fatalError() }
print("Formatted currency Number: \(formattedCurrency)")
// Formatted currency Number: $1,231.90

vialyx

let unit = Measurement(value: 1290, unit: UnitLength.miles)
let measurementFormatter = MeasurementFormatter()
print("Measurement miles: \(measurementFormatter.string(from: unit))")
// Measurement miles: 1,290 mi

let kilometers = unit.converted(to: UnitLength.kilometers)
// 2076.0486 km

vialyx

var nameComponenets = PersonNameComponents()
nameComponenets.givenName = "Maxim"
nameComponenets.familyName = "Vialyx"
nameComponenets.middleName = "Olegovich"
let nameComponenetsFormatter = PersonNameComponentsFormatter()
print("Formatted name componenets: \(nameComponenetsFormatter.string(from: nameComponenets))")
// Formatted name componenets: Maxim Vialyx

nameComponenetsFormatter.style = .abbreviated
print("Abbreviated name componenets: \(nameComponenetsFormatter.string(from: nameComponenets))")

vialyx

//: Playground - noun: a place where people can play

import UIKit

enum PersonalAccount {
    case credit(amount: Int64, id: UInt)
    case debit(amount: UInt64, id: UInt)
}

let accounts: [PersonalAccount] = [.credit(amount: -1000, id: 1),

vialyx

enum Gender {
    case unknown
    case male
    case female
}

struct User {
    let name: String
    let gender: Gender
}

vialyx

// MARK: Continue, break, throw

let numbers: [Int] = [1, 2, 3, 4, 5, 10, 11, 20]

// MARK: continue
var evenSum = 0
for number in numbers {
    if number % 2 != 0 { continue }
    
    evenSum += number

vialyx

// MARK: guard

typealias JSON = [String: Any?]

struct Account {
    let udid: String
    let token: String
}

extension Account {