#ocaml on 2020-02-16 — irc logs at freenode.irclog.whitequark.org

2019-09-26 12:04 adrien changed the topic of #ocaml to: Discussions about the OCaml programming language | http://www.ocaml.org | OCaml 4.09 release notes: https://caml.inria.fr/pub/distrib/ocaml-4.09/notes/Changes | Try OCaml in your browser: http://try.ocamlpro.com | Public channel logs at http://irclog.whitequark.org/ocaml

00:25 pierpal has quit [Ping timeout: 240 seconds]

00:27 laudecay has joined #ocaml

00:28 <laudecay> hey im getting errors about "io_vector" not being found but im importing lwt_unix and lwt, and i'm compiling with mirage under my current opam switch

00:28 <laudecay> (which has lwt installed)

00:28 <laudecay> io_vector is p clearly defined in the docs for lwt

00:36 NSA_Spy has quit [Ping timeout: 240 seconds]

00:40 NSA_Spy has joined #ocaml

00:47 FreeBirdLjj has joined #ocaml

00:47 kleisli has quit [Ping timeout: 268 seconds]

00:52 FreeBirdLjj has quit [Ping timeout: 272 seconds]

01:06 serge has joined #ocaml

01:10 Hrundi_V_Bakshi has quit [Ping timeout: 240 seconds]

01:11 serge has quit [Ping timeout: 268 seconds]

01:19 kleisli has joined #ocaml

01:33 olle has quit [Ping timeout: 272 seconds]

01:35 olle has joined #ocaml

01:40 ocaml459 has joined #ocaml

01:41 ocaml459 has quit [Client Quit]

01:49 Haudegen has quit [Ping timeout: 260 seconds]

02:11 vicfred has joined #ocaml

02:20 olle has quit [Ping timeout: 260 seconds]

02:21 olle has joined #ocaml

02:22 ocaml459 has joined #ocaml

02:23 ocaml459 has quit [Client Quit]

02:25 pierpal has joined #ocaml

02:27 NSA_Spy has quit [Remote host closed the connection]

02:27 olle has quit [Ping timeout: 260 seconds]

02:28 NSA_Spy has joined #ocaml

02:29 olle has joined #ocaml

02:30 FreeBirdLjj has joined #ocaml

02:34 NSA_Spy has quit [Remote host closed the connection]

02:35 FreeBirdLjj has quit [Ping timeout: 240 seconds]

02:35 NSA_Spy has joined #ocaml

02:41 nullifidian_ has joined #ocaml

02:42 nullifidian__ has quit [Read error: Connection reset by peer]

02:54 serge has joined #ocaml

02:54 pierpal has quit [Read error: Connection reset by peer]

02:59 serge has quit [Ping timeout: 268 seconds]

03:03 NSA_Spy has quit [Remote host closed the connection]

03:04 Undercover_Russi has joined #ocaml

03:09 Undercover_Russi has quit [Remote host closed the connection]

03:10 Undercover_Russi has joined #ocaml

03:14 Undercover_Russi has quit [Remote host closed the connection]

03:15 Undercover_Russi has joined #ocaml

03:17 mfp has quit [Ping timeout: 260 seconds]

03:20 wingsorc has quit [Ping timeout: 245 seconds]

03:34 malina has joined #ocaml

03:36 tormen has joined #ocaml

03:38 Undercover_Russi has quit [Remote host closed the connection]

03:39 Undercover_Russi has joined #ocaml

03:40 tormen_ has quit [Ping timeout: 265 seconds]

03:40 Undercover_Russi has quit [Remote host closed the connection]

03:41 Undercover_Russi has joined #ocaml

03:44 Undercover_Russi has quit [Remote host closed the connection]

03:45 Undercover_Russi has joined #ocaml

03:49 Undercover_Russi has quit [Remote host closed the connection]

03:49 Undercover_Russi has joined #ocaml

03:55 Undercover_Russi has quit [Read error: Connection reset by peer]

03:55 Not_A_NSA_Spy has joined #ocaml

04:31 Undercover_Russi has joined #ocaml

04:31 Not_A_NSA_Spy has quit [Read error: Connection reset by peer]

04:42 serge_ has joined #ocaml

04:42 kleisli has quit [Ping timeout: 272 seconds]

04:44 Undercover_Russi has quit [Remote host closed the connection]

04:44 Undercover_Russi has joined #ocaml

04:47 serge_ has quit [Ping timeout: 260 seconds]

04:47 nullifidian_ has quit [Read error: Connection reset by peer]

04:47 nullifidian_ has joined #ocaml

05:03 Undercover_Russi has quit [Remote host closed the connection]

05:04 Undercover_Russi has joined #ocaml

05:05 Undercover_Russi has quit [Remote host closed the connection]

05:06 Undercover_Russi has joined #ocaml

05:19 Undercover_Russi has quit [Remote host closed the connection]

05:20 Undercover_Russi has joined #ocaml

05:21 malina has quit [Ping timeout: 260 seconds]

05:27 Undercover_Russi has quit [Remote host closed the connection]

05:27 Undercover_Russi has joined #ocaml

05:29 gravicappa has joined #ocaml

05:34 malina has joined #ocaml

05:36 Undercover_Russi has quit [Ping timeout: 245 seconds]

06:30 serge_ has joined #ocaml

06:35 serge_ has quit [Ping timeout: 268 seconds]

06:58 ggole has joined #ocaml

07:47 ostera has quit [Ping timeout: 260 seconds]

08:18 serge has joined #ocaml

08:23 serge has quit [Ping timeout: 268 seconds]

08:44 nullifidian_ has quit [Read error: Connection reset by peer]

08:44 nullifidian__ has joined #ocaml

08:49 malina has quit [Remote host closed the connection]

08:54 dborisog has joined #ocaml

08:56 FreeBirdLjj has joined #ocaml

09:11 mbuf has joined #ocaml

09:12 kakadu has joined #ocaml

09:29 tane has joined #ocaml

09:44 Haudegen has joined #ocaml

10:06 pierpal has joined #ocaml

10:07 serge has joined #ocaml

10:11 serge has quit [Ping timeout: 268 seconds]

10:37 jnavila has joined #ocaml

10:42 stephe has quit [Read error: Connection reset by peer]

10:42 chewbranca has quit [Read error: Connection reset by peer]

10:42 stephe has joined #ocaml

10:42 chewbranca has joined #ocaml

10:43 SrPx has quit [Read error: Connection reset by peer]

10:43 rdivyanshu has quit [Read error: Connection reset by peer]

10:43 rdivyanshu has joined #ocaml

10:44 SrPx has joined #ocaml

11:00 FreeBirdLjj has quit [Remote host closed the connection]

11:00 FreeBirdLjj has joined #ocaml

11:05 FreeBirdLjj has quit [Ping timeout: 240 seconds]

11:09 nullifidian__ has quit [Ping timeout: 272 seconds]

11:09 mfp has joined #ocaml

11:16 pierpal has quit [Read error: Connection reset by peer]

11:16 pierpal has joined #ocaml

11:22 nullifidian has joined #ocaml

11:37 tane has quit [Quit: Leaving]

11:40 zolk3ri has joined #ocaml

11:45 tizoc has quit [Quit: Coyote finally caught me]

11:46 tizoc has joined #ocaml

11:55 serge has joined #ocaml

11:59 serge has quit [Ping timeout: 268 seconds]

12:03 kakadu has quit [Ping timeout: 260 seconds]

12:19 FreeBirdLjj has joined #ocaml

12:25 TheRuralJuror has joined #ocaml

12:29 tane has joined #ocaml

12:45 <Leonidas> did you reference it correctly? Just including lwt in the build does not mean it is opened.

12:53 picolino has quit [Remote host closed the connection]

12:53 jnavila_ has joined #ocaml

12:55 jnavila has quit [Ping timeout: 256 seconds]

12:56 zolk3ri has quit [Quit: Lost terminal]

13:20 olle has quit [Ping timeout: 260 seconds]

13:22 olle has joined #ocaml

13:42 pierpal has quit [Remote host closed the connection]

13:43 serge has joined #ocaml

13:48 serge has quit [Ping timeout: 268 seconds]

13:56 pierpal has joined #ocaml

14:09 webshinra has quit [Remote host closed the connection]

14:12 pierpal has quit [Ping timeout: 240 seconds]

14:13 webshinra has joined #ocaml

14:16 zekt83 has quit [Ping timeout: 258 seconds]

14:17 zekt83 has joined #ocaml

14:22 pierpal has joined #ocaml

14:28 pierpal has quit [Read error: Connection reset by peer]

14:30 daharon has joined #ocaml

14:32 <daharon> Hey guys, I'm learning OCaml and I'm having a heck of a time trying to get [@@deriving show] to work. It seems like there has been big changes in this area recently and I think I'm running into old information in my searches. I'm using OCaml 4.09.0 and Dune 2.2.0. Can someone please point me to an example dune-file that sets up PPX correctly?

14:33 pierpal has joined #ocaml

14:35 <Armael> just adding (preprocess (pps ppx_deriving.show)) should do the trick

14:37 <daharon> Armael, then I get the error "Unbound value show" when I try and use `show <variable>`.

14:37 pierpal has quit [Read error: Connection reset by peer]

14:38 gareppa has joined #ocaml

14:38 <Armael> can you post your complete code?

14:40 <daharon> Armael, https://gist.github.com/daharon/d6713c1dac1ed343c3e1df5d47eaafe9

14:42 gareppa has quit [Remote host closed the connection]

14:44 pierpal has joined #ocaml

14:44 <Armael> daharon: https://github.com/ocaml-ppx/ppx_deriving#plugin-show

14:44 <Armael> the name of the function generated for type "expr" is "show_expr" not "show"

14:45 <Armael> (and you have to pass it a printer for its parameter (the 'a) )

14:48 <daharon> Armael, What should I use as the "printer"?

14:49 picolino has joined #ocaml

14:49 <Armael> here it seems you have a "mail_predicate expression" and a "string expression"

14:49 <Armael> so a printer for mail_predicate and string, respectively

14:51 <Armael> ie pp_mail_predicate (generated by the earlier [@@deriving show]), and, I want to say Format.pp_print_string

14:51 <Armael> but for some reason Base choses to emit a warning for the second one (from the standard library)

14:53 <daharon> Armael, You mean to write like so? print_endline (show_expr pp_mail_predicate expression)

14:54 FreeBirdLjj has quit [Remote host closed the connection]

14:54 <Armael> yes

14:54 FreeBirdLjj has joined #ocaml

14:59 FreeBirdLjj has quit [Ping timeout: 265 seconds]

15:00 <daharon> Error (alert deprecated): module Base.Format

15:00 <daharon> Must be something else, now.

15:00 <Armael> yes that's the warning I was referring to

15:00 <Armael> not sure why Base decided to shadow Format from the stdlib and deprecate it

15:01 <Armael> I don't use base myself so idk

15:01 <daharon> I'm using the Real World OCaml book. It's using Base.

15:02 <daharon> I'll search. So far this has helped, though. Thanks.

15:09 averell has quit [Quit: .]

15:13 decentpenguin has joined #ocaml

15:14 nullifidian has quit [Read error: Connection reset by peer]

15:15 nullifidian has joined #ocaml

15:16 pierpal has quit [Quit: Poof]

15:16 pierpal has joined #ocaml

15:20 nullcone has quit [Quit: Connection closed for inactivity]

15:24 <daharon> Caml.Format.pp_print_string worked.

15:26 <daharon> Is there an easier way? Kind of like Rust's #[derive(Debug)]?

15:26 zekt83 has quit [Quit: Ping timeout (120 seconds)]

15:27 wingsorc has joined #ocaml

15:28 TheRuralJuror has quit [Quit: Bin weg.]

15:29 averell has joined #ocaml

15:30 zekt83 has joined #ocaml

15:31 serge has joined #ocaml

15:32 pierpal has quit [Ping timeout: 260 seconds]

15:34 pierpal has joined #ocaml

15:35 serge has quit [Ping timeout: 260 seconds]

15:45 kleisli has joined #ocaml

15:47 <rgrinberg> daharon there's no easier way

15:59 daharon has quit [Quit: Leaving]

16:05 zekt833 has joined #ocaml

16:05 zekt83 has quit [Ping timeout: 260 seconds]

16:07 oni-on-ion has joined #ocaml

16:21 Haudegen has quit [Quit: Bin weg.]

16:22 Haudegen has joined #ocaml

16:38 mbuf has quit [Quit: Leaving]

16:39 NSA_Spy has joined #ocaml

16:43 pierpal has quit [Ping timeout: 260 seconds]

16:58 zekt8337 has joined #ocaml

16:58 zekt833 has quit [Quit: Ping timeout (120 seconds)]

16:59 pierpal has joined #ocaml

16:59 sagax has quit [Remote host closed the connection]

17:15 nullifidian_ has joined #ocaml

17:18 nullifidian has quit [Ping timeout: 240 seconds]

17:19 serge has joined #ocaml

17:24 serge has quit [Ping timeout: 240 seconds]

17:28 oni-on-ion has quit [Ping timeout: 240 seconds]

17:29 oni-on-ion has joined #ocaml

17:46 sagax has joined #ocaml

18:16 nullcone has joined #ocaml

18:32 Fardale has quit [Ping timeout: 252 seconds]

18:32 aubian has quit [Ping timeout: 246 seconds]

18:39 Hrundi_V_Bakshi has joined #ocaml

18:42 aubian has joined #ocaml

18:43 Fardale has joined #ocaml

18:49 kleisli has quit [Ping timeout: 260 seconds]

19:07 decentpenguin has quit [Quit: decentpenguin]

19:08 serge has joined #ocaml

19:12 serge has quit [Ping timeout: 260 seconds]

19:27 TheLemonMan has joined #ocaml

19:33 olle has quit [Ping timeout: 268 seconds]

19:35 olle has joined #ocaml

19:49 kleisli has joined #ocaml

19:59 ggole has quit [Quit: Leaving]

20:05 gendarme has joined #ocaml

20:09 NSA_Spy has quit [Remote host closed the connection]

20:09 NSA_Spy has joined #ocaml

20:12 gendarme has quit [Remote host closed the connection]

20:12 gendarme has joined #ocaml

20:17 gendarme has quit [Remote host closed the connection]

20:17 gendarme has joined #ocaml

20:17 ArthurStrong has quit [Quit: leaving]

20:19 malina has joined #ocaml

20:29 jnavila_ has quit [Remote host closed the connection]

20:29 jnavila has joined #ocaml

20:32 mahmudov has quit [Ping timeout: 268 seconds]

20:35 dborisog has quit [Ping timeout: 240 seconds]

20:53 gravicappa has quit [Ping timeout: 268 seconds]

20:56 serge has joined #ocaml

21:00 serge has quit [Ping timeout: 265 seconds]

21:26 jnavila has quit [Remote host closed the connection]

21:34 Jesin has quit [Quit: Leaving]

21:37 Jesin has joined #ocaml

21:41 gendarme has quit [Remote host closed the connection]

21:42 gendarme has joined #ocaml

21:45 mahmudov has joined #ocaml

21:54 landonf_ has quit [Quit: ZNC - http://znc.sourceforge.net]

21:55 landonf has joined #ocaml

22:02 dckc has quit [Ping timeout: 272 seconds]

22:05 dckc has joined #ocaml

22:29 TheLemonMan has quit [Quit: "It's now safe to turn off your computer."]

22:30 ocaml459 has joined #ocaml

22:31 ocaml459 has quit [Client Quit]

22:34 Serpent7776 has quit [Quit: leaving]

22:44 serge has joined #ocaml

22:44 tane has quit [Quit: Leaving]

22:49 serge has quit [Ping timeout: 272 seconds]

23:42 Hrundi_V_Bakshi has quit [Ping timeout: 240 seconds]

23:54 nullifidian_ has quit [Read error: Connection reset by peer]

23:55 nullifidian has joined #ocaml

23:59 Haudegen has quit [Ping timeout: 272 seconds]