"""
A simple example of creating threads.

Note the use 'ref' to refer to a method instead of invoking it.
"""

use System.Threading


class ThreadExample

    var _maxSeconds = 1.2f
    var _start as DateTime

    def run
        _start = DateTime.now
        t = Thread(ref .writeB)
        t.start
        while not .isFinished
            print 'a' stop
        t.join
        print
        print 'Finished.'
        
    def writeB
        while not .isFinished
            print 'b' stop

    get isFinished as bool
        return DateTime.now.subtract(_start).totalSeconds >= _maxSeconds

    def main is shared
        ThreadExample().run