[mcclim-devel] question about CLIM spec [format-graph-from-roots]

[Duncan Rose]

On Monday, July 18, 2005, at 08:13  pm, rpgoldman at real-time.com wrote:

>
> AFAICT, the CLIM spec doesn't say anything about what are the
> acceptable values for the DUPLICATE-TEST argument to
> FORMAT-GRAPH-FROM-ROOTS (although it does specify that the default
> value is EQL).  This seems very unfortunate.  If we were to be limited

It says that it is a '...function of two arguments that is used to 
compare two objects...'
I think any function of two arguments that can be used to compare two 
objects should be ok.

> to the conventional equality test values, then we would be able to use
> a hash-table to store the graph nodes.  However, if the spec permits
> arbitrary functions of two arguments, that seems to make use of
> hash-tables impossible.  Am I overlooking something?  Is this a
> deficiency in the spec?

I don't understand what the benefit of using hashtables to store the 
nodes is. That said, it seems to me that whilst the spec permits 
arbitrary functions of two arguments, any specific node type will need 
a particular DUPLICATE-TEST function... or am I missing the point of 
the question totally?

-Duncan

>
> thanks,
> R
> _______________________________________________
> mcclim-devel mailing list
> mcclim-devel at common-lisp.net
> http://common-lisp.net/cgi-bin/mailman/listinfo/mcclim-devel
>