[Caml-list] OReilly exercise question

[Caml-list] OReilly exercise question

[Vasili Galchin]

Hello

    I am working some of the exercises in the online
OReilly book, in particular the time server in the
Distributed Computing chapter. I wrote the following
function:

(* Get time of day and send across the wire *)
let time_service ic oc =
   try
     let ts = Unix.time () in
     let (date:Unix.tm) = Unix.gmtime ts in
     let year = string_of_int (date.tm_year);
         month = string_of_int (date.tm_mon + 1);
         day = string_of_int (date.tm_mday);
         hour = string_of_int (date.tm_hour);
         minute = string_of_int (date.tm_min);
         seconds = string_of_int (date.tm_sec) in
     let r = year^month^day^hour^minute^seconds
     in output_string oc (r^"\n"); flush oc
   with _ -> Printf.eprintf "BLAH\n"; flush stdout;
xit 0;;
                                                      
                         
I get the following error from ocamlc:

File "time1.ml", line 23, characters 30-44:
Unbound record field label tm_year

I am confused because this field is in Unix.tm! ???

Regards, Vasili

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Re: [Caml-list] OReilly exercise question

[Richard Jones]

On Wed, Mar 24, 2004 at 02:34:16PM -0800, Vasili Galchin wrote:
> File "time1.ml", line 23, characters 30-44:
> Unbound record field label tm_year
> 
> I am confused because this field is in Unix.tm! ???

You need to write date.Unix.tm_year, or else

open Unix

at the start of the file.

Rich.

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Re: [Caml-list] OReilly exercise question

[Zeno Lee]

The exercise is under the assumption that you've already opened the Unix
module.

try

date.Unix.tm_year

----- Original Message ----- 
From: "Vasili Galchin" <vasiliocaml@yahoo.com>
To: <caml-list@inria.fr>
Sent: Wednesday, March 24, 2004 5:34 PM
Subject: [Caml-list] OReilly exercise question


> Hello
>
>     I am working some of the exercises in the online
> OReilly book, in particular the time server in the
> Distributed Computing chapter. I wrote the following
> function:
>
> (* Get time of day and send across the wire *)
> let time_service ic oc =
>    try
>      let ts = Unix.time () in
>      let (date:Unix.tm) = Unix.gmtime ts in
>      let year = string_of_int (date.tm_year);
>          month = string_of_int (date.tm_mon + 1);
>          day = string_of_int (date.tm_mday);
>          hour = string_of_int (date.tm_hour);
>          minute = string_of_int (date.tm_min);
>          seconds = string_of_int (date.tm_sec) in
>      let r = year^month^day^hour^minute^seconds
>      in output_string oc (r^"\n"); flush oc
>    with _ -> Printf.eprintf "BLAH\n"; flush stdout;
> xit 0;;
>
>
> I get the following error from ocamlc:
>
> File "time1.ml", line 23, characters 30-44:
> Unbound record field label tm_year
>
> I am confused because this field is in Unix.tm! ???
>
> Regards, Vasili
>
> __________________________________
> Do you Yahoo!?
> Yahoo! Finance Tax Center - File online. File on time.
> http://taxes.yahoo.com/filing.html
>
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> To unsubscribe, mail caml-list-request@inria.fr Archives:
http://caml.inria.fr
> Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ:
http://caml.inria.fr/FAQ/
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