Greetings.
I am illustrating some basic syntactic differences between programming
languages to some people. In order to do this I embedded a small Scala
program into an Org file
#+BEGIN_SRC scala :exports both
object Fibonacci extends App
{
def fib (n : Int) : Int =
{
if (n == 1 || n == 2)
n - 1
else
fib (n - 1) + fib (n - 2)
}
println (fib (7))
}
#+END_SRC
This isn't in any way a correctly efficient way to (recursively)
calculate numbers from the sequence, but this is only about syntactics
for beginners, so I need to keep it very simple.
Anyway, when I compile and run this code in Scala it works just fine:
------------------
[jarmo@localhost tmp]$ scalac test.scala
[jarmo@localhost tmp]$ scala Fibonacci
8
------------------
But C-c C-c in Org mode gives me a warning and no result:
#+RESULTS:
: /tmp/babel-6890GcO/scala-6890K2a:6: warning: Fibonacci$2 has a main method
with parameter type Array[String], but Main.$anon$2.$anonfun$1.Fibonacci$2 will
not be a runnable program.
: Reason: companion contains its own main method, which means no static
forwarder can be generated.
:
: object Fibonacci extends App
: ^
: one warning found
: ()
When I look at the temporary file I see that the code has been embedded
in a wrapper defined in ob-scala.el. I guess it's the wrapper that
messes up the execution of the code.
What is the wrapper for? How am I supposed to use it?
Jarmo
