[SOLVED] Unwrapping long datatype in Swift Linux

Unwrapping long datatype in Swift Linux

I'm trying to get a record from MongoDB which has a DateTime property. This property is ISODate but is received as a long data type (milliseconds since 1970) through the Perfect-MongoDB API.

The code looks like this:

if var something = dictionary["Something"] as? [String:Any], var intDate = something["$date"] as? Int64
{
 let date = Date(timeIntervalSince1970: TimeInterval(intDate/1000))
}

This code is working fine in Mac OSX. However in Linux, created["$date"] as? Int64 is always nil.

I've tried a couple of things, including using Double and NSNumber instead of Int64 but it is still nil.

Any ideas on how I can access this number? I need to convert it to a readable date, and the way I'm doing this is through TimeInterval() which needs a Double value for seconds after 1970, so it needs to be divisible by 1000 and convertible to Double during that step.

Edit: This is the NSNumber code where intDate is still nil and thus doesn't fall through the let date line. something is not nil

if var something = dictionary["Something"] as? [String:Any], var intDate = something["$date"] as? NSNumber
{
  let date = Date(timeIntervalSince1970: TimeInterval(NSDecimalNumber(decimal:intDate.decimalValue/1000).doubleValue))
}

Edit 2: Sample Dictionary for this case:

var dictionary : [String:Any] = ["SomethingElse":"SomeOtherData","Something":["$date": 1507710414599]]

Solution

Apparently there is only limited conversion between integer types and NSNumber in Swift on Linux, so you have to cast to the exact type, which is Int in this case:

let dictionary : [String: Any] = ["SomethingElse":"SomeOtherData","Something":["$date": 1507710414599]]

if let something = dictionary["Something"] as? [String:Any],
    let numDate = something["$date"] as? Int {

    let date = Date(timeIntervalSince1970: Double(numDate)/1000)
    print("Date:", date)
}