Original-Via: uk.ac.nsf; Thu, 30 Jan 92 19:28:07 GMT
Posted-Date: Thu, 30 Jan 92 12:22:11 CST
X-Mailer: ELM [version 2.3 PL11]


I agree with Kevin Hammond when he points out that the syntactic
differences between legal and illegal LHSes are subtle.  This appears
to be yet another of a growing number of gotcha's associated with
pattern-matching.  A while back on the list, there was some discussion
of the fact that overloaded functions can lead to bizarre interactions
with pattern-matching, e.g. + can be overloaded so that it is not
associative, or that - is not its inverse, etc.  Someone made what I
think is a reasonable assertion to the effect that pattern-matching
(of the n+k variety) needed a re-think.  Have the powers-that-be
re-thought?  Is n+k pattern-matching worth the confusion that it
seems to entail?


---
Emery Berger ([EMAIL PROTECTED])    "It is best to get out of any way
Applied Research Laboratories          not the way of wine."
University of Texas at Austin                           -- Omar Khayyam


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