Re: [boost] [Boost-users] [review][fixed_string] FixedString review starts today

On Mon, Dec 2, 2019 at 11:59 AM Zach Laine via Boost wrote:

On Fri, Nov 29, 2019 at 6:15 PM Vinnie Falco via Boost < boost@lists.boost.org> wrote:

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On Fri, Nov 29, 2019 at 4:06 PM Tim Song via Boost wrote:

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The extent to which an implementation determines that a type cannot be an

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input iterator is unspecified, except that as a minimum integral types shall not qualify as input iterators.

Wow, nice bit of archeological work there! Agustin right again, as usual.

I don't think that's the take-away. "unspecified" does not mean that a good implementation only checks that the type is not an integral type. It just means that they don't document whatever they do, as they would with "implementation-defined". It also does not mean that a Boost library (which is not an implementation) should accept "double" as an iterator!

Zach

This specification is only used to disambiguate (size_t, value_type) and (Iter, Iter) overloads. Having (double, double) go to the latter and explode at compile time might not be a bad thing.