It’s fine to punt on things. You can either not include those methods at all or 
include them as

skewness(d::HarryDist) = error(“Not yet implemented”)

 — John

On Dec 30, 2013, at 2:15 PM, Harry Southworth <[email protected]> 
wrote:

> Thanks for the tip.
> 
> Another question, and possibly one not best posted here:
> 
> Is there a minimum required functionality for adding a distribution to the 
> package? I ask because the package seems to want me to provide skewness and 
> kurtosis functions, but I've never wanted to know those things, don't know 
> why anyone else would, have never seen them written down, and would rather 
> spend my time doing something else.
> 
> Thanks again,
> Harry

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