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I only know of the brute force update which is less than desirable:
class test (x : int) = object
val a = x;
val b = x;
method add (d:int) =
let copy = {} in
let arr : int array = Obj.magic copy in
arr.(2) - arr.(2) + d;
arr.(3) - arr.(3) + d;
copy
method print = Format.printf %d %d a b
end
But my brain is fried and I can't think of a nicer way..
Peng
On Wednesday 25 March 2009 04:15:38 pm Peng Zang wrote:
Thanks, do you know of a good work around?
Peng
On Wednesday 25 March 2009 04:01:24 pm Andres Varon wrote:
On Mar 25, 2009, at 3:55 PM, Peng Zang wrote:
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Hi, camlp4 seems to break parsing of object duplication on 3.11.
Can anyone
replicate this problem? Is this an known issue? A quick google
search did
not reveal anything..
Yeah. I reported the bug here:
http://caml.inria.fr/mantis/view.php?id=4673
Andres
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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