I've got a function that takes several arguments, the first of which
should be a scalar (specifically, a string). I'd like to have a
precondition to verify that the argument is, in fact, a scalar. Is
there a way to do that (preferably without using modules--I'm trying
to write an entirely self-contained script).
I could make it take a REFERENCE to a scalar, and then do "ref $_[0]
eq 'SCALAR'", but that's not really what I'm looking for.
The value may have been specified as a literal, so I can't do
anything using the *{foo}{SCALAR} syntax (even if I had the name of
the variable and not its value).
Any thoughts?
--Dks
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