Hi,

I m very new to ocaml and i m facing the problem below,

In a.ml a record type t is defined and is also defined transparently in a.mli, i.e. in d interface so that the type definition is available to all other files.

a.ml also has a function, func, which returns a list of t.

Now in another file, b.ml i m calling func, now obviously ocaml compiler wud nt be able to infer d type of objects stored in d list, for compiler its just a list. so in b.ml, i hav something like dis,

let tlist = A.func in let vart = List.hd tlist in printf "%s\n" vart.name (name is a field in record t)

Now here i get a compiler error sayin "Unbound record field label name" which makes sense as compiler can't infer d type of vart.

my first question: how do I explicitly provide d type of vart as t here? i tried doing "let vart:A.t = " but got the same error.

I also tried creating another function to fetch the first element of d list and mentioning return type as A.t, but then i got the "Unbound value A.t". I did this:

let firstt = function [] -> 0 | x :: _ -> A.t x ;;

The problem is compiler is unable to recognize A.t (a type) in b.ml but is able to recognize function A.func. If I remove A.t from the b.ml, i don'get any compiler errors.

Please help, its urgent work. Thanks in advance!

~Tarun