From: Anthony Tavener <anthony.tavener@gmail.com>
To: "caml-list@inria.fr" <caml-list@inria.fr>
Subject: [Caml-list] Types look compatible, but they aren't?
Date: Sat, 13 Apr 2013 00:50:21 -0600 [thread overview]
Message-ID: <CAN=ouMQQM8ox8qfSKP_ZPdwTdXb4FL5FwRuJMW9P5MERvPV3Dw@mail.gmail.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 875 bytes --]
File "virtue.ml", line 462, characters 12-24:
Error: This expression has type
int * ((int * int -> int * int) list -> exn) *
(exn -> (int * int -> int * int) list)
but an expression was expected of type
int * ((< .. > as 'a) list -> exn) * (exn -> 'a list)
The code in question:
(fun id ->
let m = Modifier.attach id in
[ m Cast.total'k (fun (v,b) -> (v, max 1 (b-3))) (* <-- line 462
*)
; m Lab.total'k (fun (v,b) -> (v, max 1 (b-3))) ])
For reference, the signature of Modifier.attach:
Db.key -> int * ('a list -> exn) * (exn -> 'a list) -> 'a ->
Modifier.deleter
OCaml version is 4.00.0 -- I know I should upgrade. Keep meaning to, I
guess I will if I wake up and there's no helpful soul explaining what could
be wrong here. :)
Thank-you for any help. My eyes are starting to bug-out looking at this.
-Tony
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next reply other threads:[~2013-04-13 6:50 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-13 6:50 Anthony Tavener [this message]
2013-04-13 6:56 ` Kakadu
2013-04-13 7:33 ` Gabriel Scherer
2013-04-13 16:07 ` Anthony Tavener
2013-04-13 16:15 ` Anthony Tavener
2013-04-13 17:14 ` Gabriel Scherer
2013-04-13 17:25 ` Anthony Tavener
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