Re: Property Lists Matthias Felleisen 03 Apr 2003 13:25 UTC

Constant access time and analysis via 0CFA/SBA. -- Matthias

At Thu, 03 Apr 2003 15:22:45 +0200, bear wrote:
> On Wed, 2 Apr 2003, Richard Kelsey wrote:
> >SRFI-9 is primarily a mechanism for creating new types.  A minimal
> >approach would have been for each record to contain a single, immutable
> >value.  The Scheme implementations mentioned above, along with many
> >other programming languages, extend this by allowing multiple, mutable
> >fields.   SRFI-9 specifies a common interface for this common feature.
> >
> >Hashtable-based property lists are a distinctly different, less common
> >feature, and one that is usually not combined with creating new types.
> >If you think it would be a better approach, then by all means write a
> >SRFI for it.
> Hmmm.  I may at that.  But before I go haring off after something that
> may be redundant and/or too limited to be of value, I'd like to ask:
> Why are record types preferred to property lists?  What is the problem
> they solve that property lists do not?
> 			Bear