Using module include in OCaml
- by Geoff
In OCaml 3.11, I want to "extend" an existing module using the include directive, like so:
module MyString = struct
include String
let trim s = ...
end
No problem. But now I want to expose this module's type explicitly (i.e. in a .mli file). I want something like this:
module MyString : sig
include String
val trim : string -> string
end
But the include syntax is not correct because String refers to a module, not a module type (and the compiler does indeed barf). How can I refer to the module type for String here (without having write it out explicitly in a sig expression)?
Thanks!
