Re: [Caml-list] A nastier example

[Eric Cooper <ecc@cmu.edu>]

On Sat, May 14, 2005 at 04:51:07PM +0200, Julien Verlaguet wrote:
> Here is a nastier case than the one in the previous msg.
> 
> exception E of int;;
> 
> let x=E(1);;
> 
> exception E of bool;;
> 
> x=E(true);;
> 
> answer : true
> 
> I received many mails (in private), explaining to me how the equality 
> works in OCaml, how exceptions are represented etc ...
> Which is not what I was asking, I will try to reformulate :
> 
> Is this the behaviour we want ?
> 
> Can two values of different types be equal ?

But these aren't different types -- they're both type "exn".
For example:
    let test e = (e = Exit)
    val test : exn -> bool = <fun>
So test can be applied to any exception, no matter what kind of
structure it has.

-- 
Eric Cooper             e c c @ c m u . e d u