Swift - get current time on Windows

Question

Hi, I'm trying to use time measurement in a test application on Windows. Therefore I use the DispatchTime.now() function like this:

let timeBefore = DispatchTime.now()

While searching online all examples used the function like this. Now I'm getting an error while compiling:

←[1msrc/main.swift:115:26: ←[0m←[0;1;31merror: ←[0m←[1mcannot find 'DispatchTime' in scope
←[0m        let timeBefore = DispatchTime.now()
←[0;1;32m                         ^~~~~~~~~~~~
←[0mNMAKE : fatal error U1077: "swiftc": Rückgabe-Code "0x1"

Is there something missing? Like an import? Or is this an issue with Windows and if that's the case, is there a workaround or other function to use?

165

Posted by

dominic_meyer

Reply

Add a Comment

Answer 1

Like an import?

I’m hardly an Windows expert but, even on the Mac, using DispatchTime.now() requires you to import Dispatch. So, this code:

// import Dispatch

func main() {
    print(DispatchTime.now())
}

main()

won’t compile unless you uncomment the first line.

One gotcha here is that, on Apple platforms, Foundation re-exports Dispatch. So if you change the first line to this:

import Foundation

then things work. AFAIK that’s not the case on other platforms.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

Posted by

eskimo

First I got an different error after the import, because of an issue with the Swift installation. After running the installer again and repairing the swift version it worked, thanks!

—
dominic_meyer
Yay!

—
eskimo

Add a Comment

Answer 2

Like an import?

I’m hardly an Windows expert but, even on the Mac, using DispatchTime.now() requires you to import Dispatch. So, this code:

// import Dispatch

func main() {
    print(DispatchTime.now())
}

main()

won’t compile unless you uncomment the first line.

One gotcha here is that, on Apple platforms, Foundation re-exports Dispatch. So if you change the first line to this:

import Foundation

then things work. AFAIK that’s not the case on other platforms.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

Posted by

eskimo

First I got an different error after the import, because of an issue with the Swift installation. After running the installer again and repairing the swift version it worked, thanks!

—
dominic_meyer
Yay!

—
eskimo

Add a Comment

Swift - get current time on Windows

Accepted Reply

Replies