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### 733. Comment on [rand.req.dist]/9

Section: 28.5.3.6 [rand.req.dist] Status: NAD Submitter: Stephan Tolksdorf Opened: 2007-09-21 Last modified: 2016-01-28

Priority: Not Prioritized

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Discussion:

The requirement "P shall have a declaration of the form `typedef X distribution_- type`" effectively makes the use of inheritance for implementing distributions very inconvenient, because the child of a distribution class in general will not satisfy this requirement. In my opinion the benefits of having a typedef in the parameter class pointing back to the distribution class are not worth the hassle this requirement causes. [In my code base I never made use of the nested typedef but on several occasions could have profited from being able to use simple inheritance for the implementation of a distribution class.]

Proposed resolution: I propose to drop this requirement.

[ Bellevue: ]

> Close NAD for the reasons given in N2424. In practice it is not inconvenient to meet these requirements.

Proposed resolution:

See N2424 for the proposed resolution.