diff -r 97bcf8efe4e0 -r bb6074814a73 progs/mandelbrot.scala
--- a/progs/mandelbrot.scala	Fri Nov 06 01:07:26 2020 +0000
+++ b/progs/mandelbrot.scala	Sat Nov 07 19:13:06 2020 +0000
@@ -90,7 +90,7 @@
 //   but might leave early when the pred is satisfied
 def iterations(c: Complex, max: Int) : Int = {
   def next(z: Complex) = z * z + c    
-  def pred(z: Complex) = z.abs < 2    // exit condition
+  def pred(z: Complex) = z.abs() < 2    // exit condition
   LazyList.iterate(0.0 * i, max)(next).takeWhile(pred).size
 }
 
@@ -133,6 +133,7 @@
 }
 
 
+
 // example 1
 val exa1 = -2.0 + -1.5 * i
 val exa2 =  1.0 +  1.5 * i
@@ -157,12 +158,10 @@
 
 val delta = (exc2 - exc1) * 0.0333
 
-/*
 println(s"${time_needed(
   for (n <- (0 to 12)) 
      mandelbrot(exc1 + delta * n, 
                 exc2 - delta * n, 100))} secs") 
-*/