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Subject: Re: [boost] Formal Review of Proposed Boost.Histogram Library Starts TODAY
From: Hans Dembinski (hans.dembinski_at_[hidden])
Date: 2018-09-24 08:12:09

> On 21. Sep 2018, at 23:21, Steven Watanabe via Boost <boost_at_[hidden]> wrote:
> On 09/21/2018 04:23 AM, Hans Dembinski via Boost wrote:
>> <snip>
>> In short, for the sake of performance, it is mandatory that all axis types derive from axis::base, while deriving from iterator_mixin and axis::labeled_base should be optional.
> I feel that I should point out that axis::any does not
> meet this requirement.

There is no need to store an axis::any inside an axis::any, therefore axis::any does not need to comply to all the AxisType concepts.

Best regards,

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