--- loncom/homework/default_homework.lcpm	2001/08/23 16:44:22	1.36
+++ loncom/homework/default_homework.lcpm	2001/10/05 22:28:31	1.38
@@ -7,7 +7,7 @@
 # 05/31/2001 H. K. Ng
 #
 #init some globals
-$RANDOMINIT=0;
+$hidden::RANDOMINIT=0;
 $pi=atan2(1,1)*4;
 $rad2deg=180.0/$pi;
 $deg2rad=$pi/180.0;
@@ -87,11 +87,11 @@ sub caparesponse_check {
   return "$result:<br />Error $error:<br />Answer $answer:<br />Response $response:<br /> type-$type|$tol|$tol_type|$sig:$sig_lbound:$sig_ubound|$unit|<br />$message$expr";
 }
 
-sub caparesponse_check_list {
-  my ($response,$expr)=@_;
+sub get_array_args {
+  my ($expr,$arg)=@_;
   # do these first, because who knows what varname the instructor might have used
   # but it probably isn't $CAPARESPONSE_CHECK_LIST_answer
-  my $CAPARESPONSE_CHECK_LIST_answer = eval $expr.';return $answer';
+  my $CAPARESPONSE_CHECK_LIST_answer = eval $expr.';return $'.$arg; #'
   my (@list) = eval $CAPARESPONSE_CHECK_LIST_answer;
   my $result='';
   $result.="error:$@:<br />";
@@ -100,6 +100,12 @@ sub caparesponse_check_list {
     $result.="list zero is undefined<br />";
     $list[0]=$CAPARESPONSE_CHECK_LIST_answer;
   }
+  return @list;
+}
+
+sub caparesponse_check_list {
+  my ($response,$expr)=@_;
+  my (@list) = &get_array_args($expr,'answer');
   my $aresult='';
   my $current_answer;
   $result.="Got response :$CAPARESPONSE_CHECK_LIST_answer:$list[0]:<br />";
@@ -185,7 +191,10 @@ sub hinton {
 
 sub random {
   my ($start,$end,$step)=@_;
-  if ( ! $RANDOMINIT ) { srand($external::randomseed); $RANDOMINIT=1; }
+  if ( ! $hidden::RANDOMINIT ) {
+    srand($external::randomseed);
+    $hidden::RANDOMINIT=1;
+  }
   my $num=1+int(($end-$start)/$step);
   my $result=$start + int(rand() * $num)*$step;
   return $result;