On 16/11/2015 10:22 AM, Bert Gunter wrote:
There is no multiple dispatch; just multiple misunderstanding.
The generic function is "is.numeric" . Your method for factors is
"is.numeric.factor".
You need to re-study.
I think the problem is with S3. "is.numeric.factor" could be a
"numeric.factor" method for the "is" generic, or a "factor" method for
the "is.numeric" generic. Using names with dots is a bad idea. This
would be all be simpler and less ambiguous if the class had been named
"numeric_factor" or "numericFactor" or anything without a dot.
Duncan Murdoch
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