Exception in lookup: Variable not found with irritants

[rHermes]

When I try to compile this program:

(module
  (define (main)
        (println (map (lambda (x) (+ 2 x)) ))
        0))

I get this error:

Exception in lookup: Variable not found with irritants (map ((close_outfile fn (...) -> void) (command-line fn () -> (...)) (flush-stdout fn () -> void) (get-environment-variable fn (...) -> str) (nanotime fn () -> u64) (open_outfile fn (...) -> (...)) ...))

What am I doing wrong here?

[eholk]

Hi, sorry for taking so long to respond!

There are two issues here. First, you didn't give an argument for map. You probably want to do something like this:

(module
  (define (main)
    (println (map (lambda (x) (+ 2 x)) (vector 1 2 3 4)))
    0))

Next, Harlan doesn't actually support map yet (although I'm testing a change that adds it as I type). To do the same thing without map, you'd do something like this:

(module
  (define (main)
    (println (kernel ((x (vector 1 2 3 4))) (+ 2 x)))
    0))

Let me know if this helps!