How to check whether one date is similar to another
Swift version: 5.4
Apple’s Calendar object gives us lots of useful methods for evaluating dates in various ways. One of the most useful is the method isDate(_:equalTo:toGranularity:), which lets us compare two dates at a specific level of granularity: do these two dates occur in the same minute? The same hour? Or day, week, year?
As an example, here are two dates for us to work with:
let first = Date()
let second = Date().addingTimeInterval(10000)We can now check whether those two occur within the same day, like this:
let sameDay = Calendar.current.isDate(first, equalTo: second, toGranularity: .day)If all you want to do is check whether a date points to some time during today, you should use isDateInToday() instead:
let isToday = Calendar.current.isDateInToday(first)
SPONSORED From August 2nd to 8th you can join a FREE crash course for mid/senior iOS devs who want to achieve an expert level of technical and practical skills – it’s the fast track to being a complete senior developer!
Sponsor Hacking with Swift and reach the world's largest Swift community!
Available from iOS 8.0
Similar solutions…
- How to check whether a date is inside a date range
- How to find similar words for a search term
- How to make one sprite draw in front of another using zPosition
- How to append one array to another array
- How to force one gesture to recognize before another using highPriorityGesture()
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
