How to wait for N seconds between statements in Scala?
ScalaSleepScala Problem Overview
I have two statements like this:
val a = 1
val b = 2
In between the 2 statements, I want to pause for N seconds like I can in bash with sleep command.
Scala Solutions
Solution 1 - Scala
You can try:
val a = 1
Thread.sleep(1000) // wait for 1000 millisecond
val b = 2
You can change 1000 to other values to accommodate to your needs.
Solution 2 - Scala
Given:
package object wrap {
import java.time._
def delayed[A](a: => A): A = {
Console println Instant.now
Thread.sleep(1000L)
val x = a
Console println Instant.now
x
}
}
You can:
Welcome to Scala 2.12.0-M3 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_60).
Type in expressions for evaluation. Or try :help.
scala> $intp.setExecutionWrapper("wrap.delayed")
scala> { println("running"); 42 }
2016-02-20T06:28:17.372Z
running
2016-02-20T06:28:18.388Z
res1: Int = 42
scala> :quit