How to get the Seconds from Date - Swift 4

Question

I am trying to get the number of SECONDS between two Dates. for an example having a date like this:

let savedDate = Jun 25, 2018 at 12:48:09 AM -> (just printed as example date)
let currentDate = Date()

Can anyone help me understand how to find the number of second passed as a Double preferably?

Answer 1

Date#timeIntervalSince(_:) is probably what you're looking for.

Playground Example...

I modified the format so it would parse, but the basic concept works.

let formatter = DateFormatter()
formatter.dateFormat = "MMM dd, yyyy hh:mm:ss a"
let date = formatter.date(from: "Jun 25, 2018 12:48:09 AM")
if let date = date {
    Date().timeIntervalSince(date)
}

Will output

29793.5867500305