Fix: a couple of demos;

demo/errors.dao

@@ -63,24 +63,18 @@ Test2()
 # if the "block" raises an exception, the default "value" is returned
 # instead, and the exception is suppressed.
 
-fout = io::stdio
+ls = { "A", "B", "C" }
+it = "X";
 
 std.exec {
-	defer ( any ) { return none }
-	fout = io.open( "NonExistentFile.txt", "r+" )
+	defer ( any ) { return "X" }
+	it = ls[3]  # Index out of range;
 }
 
-if( fout != io::stdio ) defer{ fout.close() }
-
-fout.writeln( "hello" )
+io.writeln( it )
 
 
 # A simpler way to write the above codes:
-fout = std.exec( io::stdio ){ io.open( "NonExistentFile.txt", "r+" ) }
-
-# Or using the assertion operator ??:
-# fout = io.open( "NonExistentFile.txt", "r+" ) ?? io::stdio
-
-if( fout != io::stdio ) defer{ fout.close() }
+it = std.exec( "X" ){ ls[3] }
 
-fout.writeln( "hello" )
+io.writeln( it )

demo/interface.dao

@@ -2,11 +2,11 @@
 interface AA
 {
 	routine Meth( a = 0 );
-	routine[]( index: int )=>int;
-	routine.name()=>string;
+	routine []( index: int )=>int;
+	routine .name()=>string;
 
 	routine for( iter: tuple<bool,int> );
-	routine[]( iter: tuple<bool,int> )=>int;
+	routine []( iter: tuple<bool,int> )=>int;
 }
 routine Test( o: AA )
 {
@@ -20,14 +20,14 @@ routine Test( o: AA )
 class BB
 {
 	routine Meth( a = 0 ){ io.writeln( a ) }
-	routine[]( index: int ){ return index }
-	routine.name(){ return "BB" }
+	routine []( index: int ){ return index }
+	routine .name(){ return "BB" }
 
 	routine for( iter: tuple<bool,int> ){
 		iter[0] = true;
 		iter[1] = 0;
 	}
-	routine[]( iter: tuple<bool,int> ){
+	routine []( iter: tuple<bool,int> ){
 		id = iter[1];
 		iter[0] = iter[1] + 1 < 5;
 		iter[1] += 1;