Simple fixes

[evaporei]

I've thinking about learning OCaml and write myself a Brainfuck interpreter, so this has been helpful, thanks!

I just had a couple of issues running this project:

Compilation

Even though I could compile the .mli file, it had different signatures than the implementation one, I've got this error:

otaviopace@Otavios-MacBook-Pro ~/ml-brainfuck (master)> ocamlopt -c brainfuck.ml
File "brainfuck.ml", line 1:
Error: The implementation brainfuck.ml
       does not match the interface brainfuck.cmi:
       Values do not match:
         val interpret : ?tape_size:int -> ?format:string -> string -> unit
       is not included in
         val interpret : string -> string
       File "brainfuck.mli", line 2, characters 0-32: Expected declaration
       File "brainfuck.ml", line 17, characters 4-13: Actual declaration

So I've fixed the interface file 😉

hello.txt example

This example had the name of the file inside it, and since it has an extension, the . could be interpreted as part of the program, so I made it similar to the other examples where the name is before the content.

Wrong outputs

In README.md it was saying the output would be 100, but it was 50 and 40, like shown below:

otaviopace@Otavios-MacBook-Pro ~/ml-brainfuck (master)> ocaml brainfuck.ml sample.bf -fmt integer
50⏎                                                                                                                                                                                                                 otaviopace@Otavios-MacBook-Pro ~/ml-brainfuck (master)> echo '++++ [> +++++ +++++ < - ] > .' | ocaml brainfuck.ml -fmt integer
40

So I've fixed the outputs on README.md.