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Proper style for argument checking?

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  • Subject: [mg111937] Proper style for argument checking?
  • From: Yaroslav Bulatov <yaroslavvb at>
  • Date: Fri, 20 Aug 2010 07:06:05 -0400 (EDT)

I have a function, and I'd like to do several checks on arguments
before evaluating it. If some check fails, I want the function to
return unevaluated and print corresponding error message, what's the
proper style of doing it?

Help for "Message" gives an example for a single check, but it seems
awkward to use same form for multiple checks.

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