Question

Assume I have two .ml files: A.ml and B.ml.

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In A.ml, I have

type my_type = {id_ary : int array; sz_ary : int array};;

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In B.ml, I have

let test_my_type {id_ary;_} = id_ary.(0) <- 10;;

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Then I compiled them like this

ocamlc -linkpkg A.ml B.ml -o C

But complier gives such an error: Error: Unbound record field label id_ary

It seems that B can’t use the type my_type from A.

What should I do?

Answer 1

add open A to the beginning of B.ml

Also just a heads up, it will be more convenient to build your code with: ocamlbuild B.native
(You will have to clean your code directory however)