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On Wed, Oct 29, 2003 at 12:06:42PM -0800, Bradd W. Szonye wrote: > No, the second list contains the values =?, (a . b), and (c . d). One > procedure and two pairs. However, because the second list happens to > match the implementation of a SRFI-44 alist, the generic collection > function thinks it is one. > > Depending on what you're trying to do, that's either a feature or a > major flaw. Fans of prototype-based OO may like the fact that the system > correctly detects "value-based" subtypes like this. People who really > want a (proc, pair, pair) tuple will probably be surprised, though. Right, the same problem he elaborated on later. Yes, thats a very real bug. But is largely a bug in the reference implementation. We just need to make it clear that alist (or alist-dict) is a dictionary implemented as an association list (but represented probably as an alist + something else to keep it type distinct). Scott
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