1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/Pure/library.scala	Sat Dec 19 16:02:26 2009 +0100
     1.3 @@ -0,0 +1,24 @@
     1.4 +/*  Title:      Pure/library.scala
     1.5 +    Author:     Makarius
     1.6 +
     1.7 +Basic library.
     1.8 +*/
     1.9 +
    1.10 +package isabelle
    1.11 +
    1.12 +import java.lang.System
    1.13 +
    1.14 +
    1.15 +object Library
    1.16 +{
    1.17 +  /* timing */
    1.18 +
    1.19 +  def timeit[A](e: => A) =
    1.20 +  {
    1.21 +    val start = System.currentTimeMillis()
    1.22 +    val result = Exn.capture(e)
    1.23 +    val stop = System.currentTimeMillis()
    1.24 +    System.err.println((stop - start) + "ms elapsed time")
    1.25 +    Exn.release(result)
    1.26 +  }
    1.27 +}