[erlang-questions] type declarations

[Kostis Sagonas]

Howard Yeh wrote:
> Hi,
> 
> I read the dialyzer on wrangler paper, and it looks really neat.

Thanks!

> I am trying to annotate my code with type declarations, but I am
> getting syntax errors.
> 
> For the simple declaration,
> 
> -spec test() -> 'ok'.
> 
> I get,
> 
> syntax error before: test
>  
> Is there a flag i need to throw? I am using R12B.

If I am not mistaken, -spec works starting with R12B-5 (and most 
probably also in R12B-4) but not in earlier R12B versions.  In any case, 
I suggest you upgrade to the recently released R13B.  There are more 
reasons to do so besides -specs.

Best,
Kostis