How to convert a floating point value greater than Int.max to Int in Swift

Question

I want to have the integer value of the following floating point value:

var floatingPointValue = NSDate().timeIntervalSince1970 * 1000

I don't care if the integer value of this floating point number is actually an integer or a string.

Answer 1

Int64 is large enough to hold a time interval of some million years measured in milliseconds:

let milliSeconds = Int64(someDate.timeIntervalSince1970 * 1000)
let milliSecondsString = String(milliSeconds)

Answer 2

Int64 is enough to hold the value you needed

let floatingPointValue = NSDate().timeIntervalSince1970 * 1000
let intValue = Int64(floatingPointValue)

Answer 3

The crucial part is to use Int64 instead of Int on 32-bit platforms. It will allow you to use 8 bytes of memory (from −9223372036854775808 to +9223372036854775807)

Int64(NSDate().timeIntervalSince1970 * 1000)