Until

A random number between zero (inclusive) and a given hi boundary (exclusive). hi may be negative, but it must not be zero.

This is both an expression and an action. The action draws a new random number, the expression reports the last drawn value.

Example:

 val gen = Random()
 val r100 = gen.until(100)
 Act(
   r100, // draw new number
   PrintLn("Random number: " ++ r100.toStr)  // print current value
 )