--- a/marking/knight3b_test.scala	Wed Jan 11 12:18:34 2017 +0000
+++ b/marking/knight3b_test.scala	Wed Jan 11 14:42:46 2017 +0000
@@ -25,13 +25,12 @@
     if (legal_moves_urban(dim, p, y).contains(x)) correct_urban(dim)(y::p) else false
 }
 
-def correct_closed_urban(dim: Int)(path: Path): Boolean = 
-  correct_urban(dim)(path) && moves_urban(path.head).contains(path.last)
-
+def correct_closed_urban(dim: Int)(p: Path) =
+  correct_urban(6)(p) &&  moves_urban(p.head).contains(p.last)
 
 lazy val f = Future {
 
-  val tsc = first_closed_tour_heuristic(6, List(List((3, 3)))).get
+  val tsc = first_closed_tour_heuristic(6, List((3, 3))).get
   assert(correct_closed_urban(6)(tsc) == true)
 
 }

--- a/marking/mark02	Wed Jan 11 12:18:34 2017 +0000
+++ b/marking/mark02	Wed Jan 11 14:42:46 2017 +0000
@@ -12,7 +12,7 @@
 echo "" >> $out
 
 function scala_vars {
-   (egrep 'var|return|ListBuffer|mutable' "$1" 2> /dev/null 1> /dev/null)
+   (egrep '\bvar\b|\breturn\b|ListBuffer|mutable' "$1" 2> /dev/null 1> /dev/null)
 }
 
 
@@ -189,38 +189,6 @@
 fi
 
 
-# knights3: var, comments test
-#
-#echo "knight3.scala does not contain vars, returns etc?" | tee -a $out
-
-#if (scala_vars knight3.scala)
-#then
-#  echo "  --> fail" | tee -a $out
-#  tsts0=$(( 1 ))
-#else
-#  echo "  --> success" | tee -a $out
-#  tsts0=$(( 0 )) 
-#fi
-
-
-# compilation test
-#if  [ $tsts0 -eq 0 ]
-#then    
-#  echo "knight3.scala runs?" | tee -a $out
-#
-#  if (scala_compile knight3.scala.bak)
-#  then
-#    echo "  --> success" | tee -a $out
-#    tsts1=$(( 0 ))
-#  else
-#    echo "  --> scala did not run knight3.scala" | tee -a $out
-#    tsts1=$(( 1 )) 
-#  fi
-#else
-#  tsts1=$(( 1 ))     
-#fi
-
-
 ## final marks
-echo "Overall mark for CW 2, Part 1 " | tee -a $out
+echo "Overall mark for CW 7, Part 1 " | tee -a $out
 echo "$marks" | tee -a $out

--- a/marking/mark02b	Wed Jan 11 12:18:34 2017 +0000
+++ b/marking/mark02b	Wed Jan 11 14:42:46 2017 +0000
@@ -26,7 +26,7 @@
 # functional tests
 
 function scala_assert {
-  (scala -i "$1" "$2" -e "") # 2> /dev/null 1> /dev/null)
+  (scala -i "$1" "$2" -e "" 2> /dev/null 1> /dev/null)
 }
 
 
@@ -65,11 +65,12 @@
   tsts1=$(( 1 ))     
 fi
 
+
 if [ $tsts1 -eq 0 ]
 then
-  echo " ordered_moves(8, List((3,4), (3,2)), (1, 3)) == List((0,1), (0,5), (2,1), (2,5))" | tee -a $out
-  echo " ordered_moves(8, List((4,0)), (0,0)) == List((2,1), (1,2))" | tee -a $out
-  echo " ordered_moves(8, List((0,4)), (0,0)) == List((1,2), (2,1))" | tee -a $out
+  echo " ordered_moves(8, List((3,4), (3,2)), (1,3)) == (0,1), (0,5), (2,1), (2,5)" | tee -a $out
+  echo " ordered_moves(8, List((4,0)), (0,0)) == (2,1), (1,2)" | tee -a $out
+  echo " ordered_moves(8, List((0,4)), (0,0)) == (1,2), (2,1)" | tee -a $out
   
   if (scala_assert "knight3.scala.bak" "../../../marking/knight3a_test.scala")
   then
@@ -82,7 +83,7 @@
 
 if [ $tsts1 -eq 0 ]
 then
-  echo " first_closed_tour_heuristic(6, List((3, 3))) found and ok?" | tee -a $out
+  echo " first_closed_tour_heuristic(6, List((3, 3))) is ok?" | tee -a $out
   
   if (scala_assert "knight3.scala.bak" "../../../marking/knight3b_test.scala")
   then
@@ -93,20 +94,6 @@
   fi
 fi
 
-if [ $tsts1 -eq 0 ]
-then
-  echo " first_tour_heuristic(8, List((0,0))) found and ok?" | tee -a $out
-  echo " first_tour_heuristic(50, List((0,0))) found and ok?" | tee -a $out
-  
-  if (scala_assert "knight3.scala.bak" "../../../marking/knight3c_test.scala")
-  then
-    echo "  --> success" | tee -a $out
-    marks=$(( marks + 1 ))
-  else
-    echo "  --> test failed" | tee -a $out
-  fi
-fi
-
 
 ## final marks
 echo "Overall mark for CW 7, Part 2" | tee -a $out

--- a/progs/re_sol.scala	Wed Jan 11 12:18:34 2017 +0000
+++ b/progs/re_sol.scala	Wed Jan 11 14:42:46 2017 +0000
@@ -140,16 +140,13 @@
 splits("bb")
 first(r, splits("bb"))
 replace(r, "abb", "c")
-replace(r, "abb", "")
 
-replace("aa".% | "bb", "abba" , "")
+val rl = SEQ("a",SEQ("b", "c"))
+val rk = SEQ(SEQ("a", "b"), "c")
 
-val r = SEQ("a",SEQ("b", "c"))
-val r = SEQ(SEQ("a", "b"), "c")
-
-val rm = der('a', r)
-der('b', r)
-der('c', r)
+val rm = der('a', rk)
+der('b', rk)
+der('c', rk)
 
 der('a', rm)
 val rn = der('b', rm)
@@ -163,11 +160,6 @@
 // the supposedly 'evil' regular expression (a*)* b
 
 val EVIL = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))
-
-ders(List.fill(5)('a') , EVIL)
-ders(List.fill(1)('b') , EVIL)
-matcher(EVIL, "a" * 15 ++ "b")
-matcher(EVIL, "b")
 println(matcher(EVIL, "a" * 1000 ++ "b"))
 println(matcher(EVIL, "a" * 1000))