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Right now I encountered a failing pipeline check in a date technique used to calculate the age of an individual.
Apple’s DateComponents comparability fails from what I can inform.
Given Dates (YYYY-MM-DD):
2004-02-29 as Birthday
2022-02-28 (Right now)
We anticipated a distinction of 17 years and 12 months. As 2004 had three hundred and sixty six days (intercalary year) that ought to not equal 18 years.
Instance Code utilized in Playground to breed:
import Basis
let dateFormatter = ISO8601DateFormatter()
dateFormatter.formatOptions = [.withInternetDateTime, .withFractionalSeconds]
let date1 = dateFormatter.date(from: "2004-02-29T00:00:00.000Z")!
let date2 = dateFormatter.date(from: "2022-02-28T00:00:00.000Z")!
var calendar = Calendar.present
calendar.dateComponents([.year, .month, .day], from: date1, to: date2) // 18 yrs: flawed
calendar.dateComponents([.year, .month, .day], from: date2, to: date1) // 17 yrs, 11 months, 28 days: appropriate, however unfavourable
calendar.dateComponents([.year, .day], from: date1, to: date2) // 18 yrs: flawed
calendar.dateComponents([.year, .day], from: date2, to: date1) // 17 yrs, 12 months: appropriate, however unfavourable
Apple Swift model 5.5.2 (swiftlang-1300.0.47.5 clang-1300.0.29.30)
So, I’m questioning if this can be a bug, a recognized bug (Suggestions/Radar anybody?) or is my assumption flawed?
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