Compare dates in swift

📆 No of days/years between two dates

Thought of writing this came to me when I was creating an all purpose Date helper utility. This will be a short article since the code is pretty much self explanatory.

Find number of days between two dates

let calendar = Calendar.current
guard let days = calendar.dateComponents([.day],
                                             from: calendar.startOfDay(for: firstDate),
                                             to: calendar.startOfDay(for: secondDate)).day else {
      return 
    }

Find number of years between two dates

let calendar = Calendar.current
guard let result = calendar.dateComponents([.year], from: firstDate, to: secondDate).year else {
      
      return 
    }

🎁Freebies

Find whether the given date is the current year

let present = Date?

if present {
let result = calendar.component(.year, from: inputDate) == calendar.component(.year, from: present)
}

Find whether the given date is yesterday

Here we have to find the number of days between the input date and today then check whether the result is equivalent to one. Let’s see the code.

/// 1) Finding the number of days between the input date and today

let calendar = Calendar.current
let today = Date!
guard let days = calendar.dateComponents([.day],
                                             from: calendar.startOfDay(for: inputDate),
                                             to: calendar.startOfDay(for: today)).day else {
      return 
    }

/// 2) Check whether the result is equivalent to one

if days == 1 {
print("It was yesterday")
}

👷🏽 Here is the date helper utility I’m working on.

GitHub - Rajaikumar-iOSDev/DateHelper: A utility/helper to work with dates.