Checking for overflow arithmetic operations in Swift, e.g adding to Int.max and subtracting from Int.min

Overflow-Arithmetic-Check.swift

// Apple Documentation: https://developer.apple.com/documentation/swift/uint64/2885895-addingreportingoverflow
let intMin = Int.min // -9223372036854775808
let intMax = Int.max // 9223372036854775807
print(intMin)
print(intMax)

if case let (result, overflow) = intMax.addingReportingOverflow(1), !overflow {
  print(result)
} else {
  print("overflow while trying to add to Int.max")
}

if case let (result, overflow) = intMin.subtractingReportingOverflow(1), !overflow {
  print(result)
} else {
  print("overflow detected while subtracting from Int.min")
}