Get difference between two dates?

Question

I have two dates in 24 hours formate like (dd-MMM-yyyy HH:mm). I want to get a difference between these two dates.

My Code : This is getting only dates, I want a number

Answer 1

struct EventDate {
var monthYear: [String]?
var monthNumber: [String]?
var year: [String]?
var month: [String]?
init(monthYear: [String]?,monthNumber:[String]?,year:[String]?,month:[String]?) {
    self.monthYear = monthYear
    self.monthNumber = monthNumber
    self.year = year
    self.month = month
}

}

func getMonthAndYearBetween(from start: String, to end: String) -> EventDate {

    var monthYear: [String] = []
    var monthNumber: [String] = []
    var years: [String] = []
    var months: [String] = []

    let format = DateFormatter()
    format.dateFormat = "dd/MM/yyyy"

    guard let startDate = format.date(from: start),
        let endDate = format.date(from: end) else {
            return EventDate(monthYear: [], monthNumber: [], year: [], month: [])
    }

    let calendar = Calendar(identifier: .gregorian)
    let components = calendar.dateComponents(Set([.month]), from: startDate, to: endDate)

    var allDates: [String] = []
    let dateRangeFormatter = DateFormatter()
    dateRangeFormatter.dateFormat = "MMM yyyy"

    for i in 0 ... (components.month! + 1) {
        guard let date = calendar.date(byAdding: .month, value: i, to: startDate) else {
            continue
        }

        let formattedDate = dateRangeFormatter.string(from: date)
        allDates += [formattedDate]

        let df = DateFormatter()
        df.dateFormat = "MMM yyyy"
        let monyr = df.string(from: date)
        monthYear.append(monyr)
        df.dateFormat = "MM"
        let monNO = df.string(from: date)
        monthNumber.append(monNO)
        df.dateFormat = "yyyy"
        let yr = df.string(from: date)
        years.append(yr)
        df.dateFormat = "MMM"
        let mon = df.string(from: date)
        months.append(mon)

    }
    return EventDate(monthYear: monthYear, monthNumber: monthNumber, year: years, month: months)
}

you can get like this

let eventDate = Date().getMonthAndYearBetween(from: startDate, to: endDate)