How to compute delta time and lines per second when reinventing findstr/find/grep

[Siegfried Heintze]

This fragment of code is not working with Groovy 1.9.2-beta. The "/" seems to be causing the problem:

    def end = new Date() 
    use(groovy.time.TimeCategory) {
        def delta = end - start
        println "($c) delta=$delta $jj lines/sec=${jj/delta}" 
    }

I know, my variable names need some work. jj is the number of lines. start is this start time and end is the end time. Computing the delta time works great. How do I compute lines/second?
Thanks
Siegfried

Here is the stack trace:

Exception in thread "Thread-2" org.codehaus.groovy.runtime.InvokerInvocationException: groovy.lang.MissingMethodException: No signature of method: java.lang.Integer.div() is applicable for argument types: (groovy.time.TimeDuration) values: [0.367 seconds]
Possible solutions: div(java.lang.Number), div(java.lang.Character), is(java.lang.Object), wait(), any(), dump()

	at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:97)

	at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)

	at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:272)

	at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:883)

	at groovy.lang.Closure.call(Closure.java:410)