[slime-devel] weak hash tables and presentation

[Lynn Quam]

Matthias Koeppe write:

>  "Geo Carncross" <geocar at gmail.com> writes:
>  > I've been looking over adding weak hashtable support to ECL, when I
>  > took a closer look at slime's use of them. 
>  
>  Weak hashtables are a useful feature, so if you want to add them to
>  ECL, I would think this would be a good idea.


I word of warning: 

   Weak hashtables (and weak pointers in general) have significant
   implications for the garbage collector.  Even after many attempts
   to fix the CMUCL garbage collector, the use of weak hashtables
   still causes problems.