From jmc at research.bell-labs.com  Mon Mar 17 09:59:57 2003
From: jmc at research.bell-labs.com (John Chambers)
Date: Mon Mar 17 16:00:18 2003
Subject: [Rd] Changes in checking & error messages
Message-ID: <3E75E2ED.7A688BA7@research.bell-labs.com>

Some fixes have been made to check a few errors better & to report
something like the correct error message in other cases.

- setMethod will now refuse to set a method for a primitive function for
a basic class ("[<-" for "matrix", for example).  Previously the method
was set but never dispatched.  (For a few days, the change prohibited
some valid methods for operators, with one basic operand, but that case
should be fixed now.  Thanks, Vince.)

- a number of functions such as getMethods, showMethods, etc. should
give better error messages if presented with arguments they don't
understand.  There are some additional low-level checks in various
places that should replace error messages about objects at the C level
with no slots by more comprehensible information.

Please report any glitches that seem to have been introduced.

John

-- 
John M. Chambers                  jmc@bell-labs.com
Bell Labs, Lucent Technologies    office: (908)582-2681
700 Mountain Avenue, Room 2C-282  fax:    (908)582-3340
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[Rd] Changes in checking & error messages
John Chambers