An "is_string" BIF?

[mccratch@REDACTED]

On 2005-03-10 at 09:21:36 (+0100), Thomas Johnsson XA (LN/EAB) wrote:
> This really exposes an ugly wart on the language, in that 
> one cannot use any expression in a guard, making it impossible
> to use abstractions there, e.g.
> 
> glorbgraph(Graph) when mygraph:curiousproperty(Graph) -> ...
> 
> -- Thomas

I would be interested why this isn't allowed. If I recall correctly
it has something to do with how guards are evaluated? Or maybe I am
now confusing something.

--
Cheers
Matthias Kretschmer