#+TITLE: My First Idris2 Program

This is a literate Idris2 Org-Mode file that the Idris2 understands.

We can have visibile code blocks using source blocks in idris.

#+BEGIN_SRC idris
data Natural = Zero | Succ Natural
#+END_SRC

#+BEGIN_SRC idris
data Vect : Natural -> Type -> Type where
  Empty : Vect Zero a
  Cons  : a -> Vect k a -> Vect (Succ k) a
#+END_SRC

We can have hidden literate lines that Idris will understand.

#+IDRIS: %name Vect xs, ys

However, we Idris2' literate support is greedy and does not understand all of the supported literate modes comments and verbatim blocks.

Thus:

#+begin_example

#+IDRIS: plus : Natural -> Natural -> Natural

#+end_example

is also an active code line.

We can also abuse org-mode comments to hide code not required for publication.

#+begin_comment idris

cannotSeeThis : Natural -> Natural

#+end_comment

#+BEGIN_SRC idris
main : IO ()
main = putStrLn "Hello!"
#+END_SRC