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Chingfan Tsao [email protected]
[ocaml_beginners] schreef op 16-10-2014 16:34:
Hi
Actually, float_of_int is a function belonging to the
standard module Pervasives which is default to be
opened. That's why you can directly use float_of_int
instead of Pervasives.float_of_int.
However, if you use utop and type in float_of_int, it
will give you:
> [ `Deprecated_use_float_module ] -> [
`Deprecated_use_float_module ] = <fun>
which suggests you use Float module, in this case,
Float.of_int.
The problem here is your REPL can not find the module
Float, I believe there's something missing in your init
script.
For example, I have
> #require "core"
and sorts of things to inform utop to load the core
suit so that it can be aware of things like Float
module.
Hopefully helpful.
2014-10-16 20:57 GMT+08:00
Hendrik Boom [email protected]
[ocaml_beginners] <[email protected] >:
On Thu, Oct 16, 2014 at 12:44:15PM +0200,
Roelof Wobben [email protected]
[ocaml_beginners] wrote:
> Hello,
>
> I try some examples of the realword
Ocaml book but now I see this output :
>
> # let ratio x y = Float.of_int x /
Float.of_int y ;;
> Error: Unbound module Float
I checked an old program of mine, and it
used
float_of_int i
instead of
Float.of_int x
Here's the program it was extracted from, in
case you're interested.
http://topoi.pooq.com/hendrik/dv/free/fun/wander/index.html
It's a bit of a bear to compile, because it
uses the glMlite library,
and you'll probably have to get its source
code and compile yourself,
because the glMlite library that's available
in opam, the usual OCaml
package system, is incomplete.
But even if you don't run it, it contains
examples of running OCaml
code, which might be helpful.
-- hendrik
> # open Core.std ;;
> Error: Syntax error
> # open Core.Std ;;
> Error: Unbound module Core
>
> How to solve this ?
>
> Roelof
>
>
>
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> Posted by: Roelof Wobben <[email protected] >
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--
曹竞帆
哈尔滨工业大学计算机科学与技术专业本科在读
哈尔滨工业大学IBMTC成员
Correct, I think.
when I do #require "Float" I see a message that float cannot be
found.
Roelof
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Posted by: Roelof Wobben <[email protected]>
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Archives up to December 31, 2011 are also downloadable at http://www.connettivo.net/cntprojects/ocaml_beginners
The archives of the very official ocaml list (the seniors' one) can be found at http://caml.inria.fr
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