Peng

         Objective Caml version 3.11.0

# #use "topfind";;
Findlib has been successfully loaded. Additional directives:
   #require "package";;      to load a package
   #list;;                   to list the available packages
   #camlp4o;;                to load camlp4 (standard syntax)
   #camlp4r;;                to load camlp4 (revised syntax)
   #predicates "p,q,...";;   to set these predicates
   Topfind.reset();;         to force that packages will be reloaded
   #thread;;                 to enable threads

# #camlp4o;;
/home/peng/app-data/godi-3.11/lib/ocaml/std-lib/dynlink.cma: loaded
/home/peng/app-data/godi-3.11/lib/ocaml/std-lib/camlp4: added to search path
/home/peng/app-data/godi-3.11/lib/ocaml/std-lib/camlp4/camlp4o.cma: loaded
         Camlp4 Parsing version 3.11.0

# class functional_point x y = object
     val x = x
     val y = y
     method get_x = x
     method get_y = y
     method move dx dy = {< x = x + dx; y = y + dy >}
   end;;
           Characters 138-144:
     method move dx dy = {< x = x + dx; y = y + dy >}
                                ^^^^^^
Warning S: this expression should have type unit.
Characters 146-156:
     method move dx dy = {< x = x + dx; y = y + dy >}
                                        ^^^^^^^^^^
Error: This expression has type bool but is here used with type int
#
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