Another update from ingydotnet^djgoku

Task/Null-object/ALGOL-W/null-object.alg

@@ -0,0 +1,10 @@
+begin
+    % declare a record type - will be accessed via references                %
+    record R( integer f1, f2, f3 );
+    % declare a reference to a R instance                                    %
+    reference(R) refR;
+    % assign null to the reference                                           %
+    refR := null;
+    % test for a null reference - will write "refR is null"                  %
+    if refR = null then write( "refR is null" ) else write( "not null" );
+end.