Re: [Chicken-users] hash-table with missing keys

[Michele Simionato]

On 5/19/05, felix winkelmann <address@hidden> wrote:

> the reason why one should use (for example):
> 
> (hash-table-ref h 'non-existing-key
>    
> <some-unique-value-known-to-the-application-that-created-and-uses-the-hashtable>)
> 
> to disambiguate the result:
> 
> (let ((unique (list 1)))
>   (if (eq? unique (hash-table-ref ht 'non-existing-key unique))
>       ...not found...
>       ...found...))

Yes, this is what I am doing now, but it is ugly, too low-level for my taste.
Felix, I give you an ultimatum: or you raise an exception,
or you give me a hash-table-has-key? function! ;-)

        Michele