I haven't added to the ContinuousDistribution-interface. I've only
added to the AbstractContinuousDistribution-class. The relevant patch
that I committed is https://issues.apache.org/jira/browse/MATH-332, so
no compatibility break should occur.

2010/1/24 Phil Steitz <phil.ste...@gmail.com>:
> Mikkel Meyer Andersen wrote:
>> Dear Community.
>>
>> I've just been going through all the continuous distributions in the
>> MATH-library to check which implemented the HasDensity<P>-interface.
>>
>> Only the F-distribution, t-distribution, Weibull distribution, and
>> Cauchy distribution didn't implement it, and with MATH-330
>> (https://issues.apache.org/jira/browse/MATH-330 - patch for the
>> F-distribution) and MATH-331
>> (https://issues.apache.org/jira/browse/MATH-331 - patches for the
>> rest) both made by me that should now be corrected.
>>
>> This means that now every continuous distribution implements
>> HasDensity<Double>. Wouldn't it then be a good idea to put a double
>> density(Double x)-method in the ContinuousDistribution-interface? It
>> would give a lot of advantages, e.g. in regards to dynamic
>> dispatching.
>>
>> What do you think?
>
> Great work!
>
> I will complete review and commit if someone does not beat me to it.
>
> Technically, adding to the ContinuousDistribution interface is a
> compatibility break, so should wait until 3.0; but if we follow
> Ted's suggestion of adding a default impl to
> AbstractContinuousDistribution, the only users actually impacted
> would be those who have implemented distributions that do not derive
> from AbstractContinuousDistribution.  I wonder how many of these
> there are.
>
> I am +1 on this change, but understand if others are not comfortable
> with the compatibility break.
>
> Phil
>
>
>>
>> Cheers, Mikkel.
>>
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