Denis Kutlubaev

Month: June 2018

  • Получение строки, содержащей склонения дней дня день

    Достаточно часто используемая штука, поэтому решил сохранить сниппет:

    func dayStringFromNumberOfDays(_ numberOfDays: Int) -> String {
    let lastDigit = numberOfDays % 10
    if (numberOfDays >= 11 && numberOfDays <= 19)
    {
        return "дней";
    }
    else
    {
        if lastDigit == 1 { return "день" };
        if lastDigit > 1 && lastDigit < 5 { return "дня" };
        if lastDigit == 0 || lastDigit >= 5 { return "дней" };
    }
    return ""
}

    Использование: 

    let daysLeft = 11
let dayString = self.dayStringFromNumberOfDays(daysLeft)
let fullString = "\(daysLeft) \(dayString)"
print(fullString)

    Результат: 11 дней

  • Swift build failed. No errors.

    This happened to me while I was writing in Swift 4.1 in XCode 9.3. I use RxSwift also. It never happened while I was writing in Objective C. There were no any logs in Report Navigator too. Project just compiled without errors, then failed. Couldn’t figure out why.

    In my case what I did and it helped:

    1. Commit changes in Git and then discard changes in XCode if it shows “M” near files
    2. Clear derived data: Xcode -> Preferences -> location
    3. Clean build folder: Shift + Cmd + Alt + K
    4. Restart XCode

    After this project tried to compile and showed errors. The error was here: 

        do {
        let jsonData = try JSONSerialization.data(withJSONObject: timingsDict, options: .prettyPrinted)
        let decoder = JSONDecoder()
        let pTiming = try decoder.decode(PTiming.self, from: jsonData)
        observer.onNext(timing)
        observer.onCompleted()
    } catch {
        print(error.localizedDescription)
        observer.onError(error)
    }

    I passed wrong variable name in observer.onNext(timing). It should have been pTiming.