Swift version: 5.6
Everyone knows you can create ranges from two integers such as 1...5
, but few people realize the same applies to dates. This means you can create a date range using the same closed-range operator (...
) and half-open range operator (..<
) you already know, allowing you to check whether one date lies inside a range.
For example, we could create three Date
objects like this:
let now = Date.now
let soon = Date.now.addingTimeInterval(5000)
let later = Date.now.addingTimeInterval(10000)
We can then compare now
and later
into a single range like this:
let range = now...later
Finally, we can check whether that range contains the soon
date using the contains()
method of ranges, like this:
if range.contains(soon) {
print("The date is inside the range")
} else {
print("The date is outside the range")
}
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This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
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