How to sleep for few milliseconds in swift 2.2?
I think more elegant than usleep
solution in current swift syntax is:
Thread.sleep(forTimeInterval: 0.002)
use func usleep(_: useconds_t) -> Int32
(import Darwin
or Foundation
...)
IMPORTANT: usleep()
takes millionths of a second, so usleep(1000000)
will sleep for 1 sec
usleep() takes millionths of a second
usleep(1000000) //will sleep for 1 second
usleep(2000) //will sleep for .002 seconds
OR
let ms = 1000
usleep(useconds_t(2 * ms)) //will sleep for 2 milliseconds (.002 seconds)
OR
let second: Double = 1000000
usleep(useconds_t(0.002 * second)) //will sleep for 2 milliseconds (.002 seconds)