[Caml-list] OO Interface

[Caml-list] OO Interface

[Warp]

If I got a parametrized class like :

class p (x:int) (y:int) =
object(self)
    val x = x
    val y = y
    method pos = (x,y)
rnd

How do I write the correct interface for this class ? I can't figure out how
to specify the parameters type.
I don't want to, but perhaps I have to use a Module ?

Thanks

Warp

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Re: [Caml-list] OO Interface

[Jacques Garrigue]

From: "Warp" <warplayer@free.fr>

> If I got a parametrized class like :
> 
> class p (x:int) (y:int) =
> object(self)
>     val x = x
>     val y = y
>     method pos = (x,y)
> rnd
> 
> How do I write the correct interface for this class ? I can't figure out how
> to specify the parameters type.

Here is the interface, as the typechecker tells you,
class p :
  int -> int -> object method pos : int * int val x : int val y : int end

You can directly write it in the .mli.

Or did you mean class type?
Actually, this automatically defines the following class type,
class type p =
  object method pos : int * int val x : int val y : int end

Hope this helps,

Jacques Garrigue
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Re: [Caml-list] OO Interface

[#!Fì£é__1³~~ 0=2°]

the easiest way to do it is to simply assign
initial values to x and y:

# class p (x:int) (y:int) =
  object(self)
    val x = 0
    val y = 0
    method pos = (x,y)
  end;;
class p : int -> int -> object method pos : int
* int val x : int val y : int end
# let x = new p 5 7;;
val x : p = <obj>
# x#pos;;
- : int * int = 0, 0

hope this helps....

file13
http://www.qlippoth.com/

---- Begin Original Message ----

From: "Warp" <warplayer@free.fr>
Sent: Thu, 17 Jan 2002 21:34:14 +0100
To: "OCaml" <caml-list@inria.fr>
Subject: [Caml-list] OO Interface


If I got a parametrized class like :

class p (x:int) (y:int) =
object(self)
    val x = x
    val y = y
    method pos = (x,y)
rnd

How do I write the correct interface for this
class ? I can't figure out how
to specify the parameters type.
I don't want to, but perhaps I have to use a
Module ?

Thanks

Warp

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bugs  FAQ: http://caml.inria.fr/FAQ/
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---- End Original Message ----



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