I have a list with words. I need to print them and number them. The only way I found to do it is by using reference variables: let i = ref 1 in List.iter (fun...
13676
Sebastien Mondet
sebmondet
Nov 20, 2012 1:27 pm
'iteri' does what you want: List.iteri ;; - : (int -> 'a -> unit) -> 'a list -> unit = <fun> ... [Non-text portions of this message have been removed]...
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Esther Baruk
surdinal09
Nov 20, 2012 1:28 pm
Hi, The latest version of OCaml includes new stdlib functions like List.iteri or List.mapi which integrate a counter in their arguments. List.iteri has the...
13678
rixed@...
rixed
Nov 20, 2012 2:45 pm
If your ocaml stdlib's do not have List.iteri you can find it on batteries : http://ocaml-batteries-team.github.com/batteries-included/hdoc/BatList.html...
13679
darooha
Nov 21, 2012 12:01 pm
Here's how I would do it: let print_list words = List.fold_left (fun i w -> Printf.printf "%d: %s\n" i w; (i+1)) 1 words List.fold_left is pretty important, so...
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Esther Baruk
surdinal09
Nov 21, 2012 12:44 pm
Yes, but in this case, the type returned by List.fold_left is int and the print_word function should definitely have unit return type. Esther Baruk ... ...
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Minhyuk Kwon
mugerc
Nov 21, 2012 12:58 pm
Hello I think, your problem is not good when using functional. You can make it functional. But, use reference! It's ok! We are not on the pure functional...
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Francois Berenger
f_berenger
Nov 22, 2012 12:40 am
... For your info, this line: i := !i+1 is incr i in the standard library (increment an integer reference). ... List.iteri (fun i w -> Printf.printf "%d: %s\n"...
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Florent Monnier
fmonnier@...
Nov 22, 2012 2:06 pm
... In recent version of OCaml there's List.iteri, otherwise you can use List.fold_left instead: let _ = List.fold_left (fun i w -> print_endline...
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Denis Setecordas
denis7cordas
Nov 26, 2012 10:55 pm
Hi, I have just installed OCAML 4.00 on my computer (Windows 7 / 64 bits) with, as required by Inria documentation, a cygwin environment. All seems working...
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Chantal Keller
chantal.keller@...
Nov 27, 2012 8:38 am
Hi Denis, I never used cygwin, but you may try to install OCaml and ocamlgraph using GODI <http://godi.camlcity.org/godi/index.html>. Hope this helps, Chantal....
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Francois Berenger
f_berenger
Nov 27, 2012 8:43 am
... Or, on a Linux computer (Ubuntu or Debian) with ocamlbrew and OPAM....
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Chantal Keller
chantal.keller@...
Nov 27, 2012 8:49 am
... Or using the package manager if you are root... Chantal....
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Gabriel Scherer
ga_sche
Nov 27, 2012 9:07 am
No, you certainly don't need a "full cygwin install"; however, being unfamiliar with Windows or Cygwin I wouldn't know which subset is necessary. Have you...
13689
George
siberianowl
Nov 27, 2012 8:19 pm
In my parser I need to create unique labels and insert them into various places in the syntax tree. So in the parser.mly I wrote: %{ let auto_label_counter =...
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Jeff Massung
ocamlferret
Nov 27, 2012 8:36 pm
Does anyone have a trivial example of a Makefile for an Ocaml project that does the following: ocamllex a file ocamlyacc a file compile all the ml files using...
13691
George
siberianowl
Nov 27, 2012 8:48 pm
... Well, the trick here is to create a real list of dependencies. Here is my makefile. It may be not very trivial, but it works fine. Just define your source...
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Gabriel Scherer
ga_sche
Nov 27, 2012 9:13 pm
Side remark: If you're doing the work of creating a project template, you may as well do the work upfront of using Menhir instead of ocamlyacc, as it is a...
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Philippe Veber
philippeveber
Nov 27, 2012 10:10 pm
Hi Jeff I know it doesn't answer your question directly but why not use oasis for this? You wouldn't have to bother at all... Cheers, ph. PS BTW, I'd recommend...
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Philippe Veber
philippeveber
Nov 27, 2012 10:14 pm
Hi Georges, [make_label] is not a function and is indeed evaluated only once at the beginning of your program, hence what you observe. You need [make_label] to...
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Eric Cooper
ecc@...
Nov 27, 2012 10:14 pm
... You've defined make_label as a simple value, not a function. Try defining and invoking it as "make_label ()" instead. -- Eric Cooper e c c @ c...
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Francois Berenger
f_berenger
Nov 28, 2012 12:08 am
... Indeed, using the package manager should be the preferred way for beginners. Debian and Ubuntu have a lot of ocaml packages. For example this interesting...
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Shalini Gangwar
shelly_2904
Nov 29, 2012 9:31 am
Hello, I am totally new to the OCAML programming language . I want to know how to connect to a database in ocaml when user is asked about the username and...
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Sergei Steshenko
sergstesh
Nov 29, 2012 10:08 am
I am new too. You are asking essentially two questions: 1) interactive I/O; 2) database interface. Regarding the latter:...
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George
siberianowl
Nov 30, 2012 5:19 pm
Trying to make a helpful explanation of parsing errors. In my parser.mly I now have: %{ open Lexing;; open Printf;; let report_error message error_starts_at = ...
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Shalini Gangwar
shelly_2904
Dec 1, 2012 11:16 am
How to make your own help command in ocaml and display the options with it?? [Non-text portions of this message have been removed]...
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Philippe Veber
philippeveber
Dec 1, 2012 11:28 am
Hi Shalini, There are plenty of libraries for that, you can have a look at the Arg module in the standard library [1], the getopt library by Alain Frisch [2] ...
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Ashish Agarwal
ashish_a1975
Dec 2, 2012 12:54 am
... The relevant module in Core is Command: https://ocaml.janestreet.com/ocaml-core/108.07.01/doc/core/Command.html [Non-text portions of this message have...
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Shalini Gangwar
shelly_2904
Dec 10, 2012 9:24 pm
while executing "make" command , got error: Unbound Module - Postgresql Tried again installing postgresql-ocaml library error occurs: E: Failure("Command...
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Philippe Veber
philippeveber
Dec 11, 2012 7:52 am
Hi Shalini, I'm not sure what you are trying to do, installing pgocaml ? Try describing more thoroughly your problem. If that's an install problem, maybe you...
