first two easy exercises

hello-world/HELP.md

@@ -0,0 +1,36 @@
+# Help
+
+## Running the tests
+
+A `Makefile` is provided with a default target to compile your solution and run the tests. At the command line in your exercise's directory, type:
+
+```bash
+make
+```
+
+## Submitting your solution
+
+You can submit your solution using the `exercism submit hello_world.ml` command.
+This command will upload your solution to the Exercism website and print the solution page's URL.
+
+It's possible to submit an incomplete solution which allows you to:
+
+- See how others have completed the exercise
+- Request help from a mentor
+
+## Need to get help?
+
+If you'd like help solving the exercise, check the following pages:
+
+- The [OCaml track's documentation](https://exercism.org/docs/tracks/ocaml)
+- The [OCaml track's programming category on the forum](https://forum.exercism.org/c/programming/ocaml)
+- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
+- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
+
+Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
+
+To get help if you're having trouble, you can use one of the following resources:
+
+- [Documentation for the Standard Library](http://caml.inria.fr/pub/docs/manual-ocaml/libref/index.html)
+- [/r/ocaml](https://www.reddit.com/r/ocaml) is the OCaml subreddit.
+- [StackOverflow](http://stackoverflow.com/questions/tagged/ocaml) can be used to search for your problem and see if it has been answered already. You can also ask and answer questions.

hello-world/Makefile

@@ -0,0 +1,9 @@
+default: clean test
+
+test: 
+	dune runtest
+
+clean:
+	dune clean
+
+.PHONY: clean

hello-world/README.md

@@ -0,0 +1,42 @@
+# Hello World
+
+Welcome to Hello World on Exercism's OCaml Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+
+## Instructions
+
+The classical introductory exercise.
+Just say "Hello, World!".
+
+["Hello, World!"][hello-world] is the traditional first program for beginning programming in a new language or environment.
+
+The objectives are simple:
+
+- Modify the provided code so that it produces the string "Hello, World!".
+- Run the test suite and make sure that it succeeds.
+- Submit your solution and check it at the website.
+
+If everything goes well, you will be ready to fetch your first real exercise.
+
+[hello-world]: https://en.wikipedia.org/wiki/%22Hello,_world!%22_program
+
+## Source
+
+### Created by
+
+- @dvberkel
+
+### Contributed to by
+
+- @daveyarwood
+- @iHiD
+- @kytrinyx
+- @marionebl
+- @Peaupote
+- @sbl
+- @sshine
+- @stevejb71
+
+### Based on
+
+This is an exercise to introduce users to using Exercism - https://en.wikipedia.org/wiki/%22Hello,_world!%22_program

hello-world/dune

@@ -0,0 +1,16 @@
+(executable
+ (name test)
+ (libraries base ounit2))
+
+(alias
+  (name    runtest)
+  (deps    (:x test.exe))
+  (action  (run %{x})))
+
+(alias
+  (name    buildtest)
+  (deps    (:x test.exe)))
+
+(env
+  (dev
+    (flags (:standard -warn-error -A))))

hello-world/dune-project

@@ -0,0 +1 @@
+(lang dune 1.1)

hello-world/hello_world.ml

@@ -0,0 +1 @@
+let hello = "Hello, World!"

hello-world/hello_world.mli

@@ -0,0 +1,4 @@
+(*
+   Returns "Hello, World!"
+*)
+val hello: string

hello-world/test.ml

@@ -0,0 +1,11 @@
+open OUnit2
+open Hello_world
+
+let ae exp got _test_ctxt = assert_equal ~printer:(fun x -> x) exp got
+
+let tests = [
+  "Say Hi!" >:: ae "Hello, World!" hello;
+]
+
+let () =
+  run_test_tt_main ("Hello World tests" >::: tests)