> i want to split code like for example the following into
> several files:

The following seems to do what you want:

----------- file test.mli -------------

class type test_type = object
        val mutable x:int
        method get_x:int
end
 
class test : test_type

----------- file test.ml --------------

class type test_type = object
        val mutable x:int
        method get_x:int
end
 
class test : test_type = object
        val mutable x = 0
        method get_x = x
end

----------- file main.ml --------------

open Test
open Printf

let main() = 
        let t=new test in
        printf "X: %d\n" t#get_x;; 
 
let _ = main()

---------------------------------------

Hope this helps,

- Xavier Leroy

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