Re: [boost] [review] Conversion review starts today

Subject: Re: [boost] [review] Conversion review starts today
From: Jeffrey Lee Hellrung, Jr. (jeffrey.hellrung_at_[hidden])
Date: 2011-09-04 15:53:15

On Sun, Sep 4, 2011 at 10:59 AM, Vicente J. Botet Escriba <
vicente.botet_at_[hidden]> wrote:

>
> Le 04/09/11 11:04, Jeffrey Lee Hellrung, Jr. a écrit :
>
>> Yes, I can imagine a lot of repeated boilerplate from multiple users
>> defining their own functors to do the same conversions.  But I don't see
>> any
>> other way around the ODR issue without outlining strict usage patterns
>> within the documentation of Conversion.  I don't feel like Conversion's
>> framework is currently very scalable: at some point, a user will want to
>> use
>> libraries C and D, each of which define conversions between typeA and
>> typeB.  At best, this will be detected at compile time, but regardless,
>> you're hosed.  Can we design Conversion to prevent this collision from
>> happening?
>>
> I don't know if you have read this sectionHow can libraries define and use
> conversions between unrelated types? <https://svn.boost.org/svn/**
> boost/sandbox/conversion/libs/**conversion_ext/doc/html/boost/**
> conversion/users_guide.html#**boost.conversion.users_guide.**
> tutorial.proto<https://svn.boost.org/svn/boost/sandbox/conversion/libs/conversion_ext/doc/html/boost/conversion/users_guide.html#boost.conversion.users_guide.tutorial.proto>>
> (https://svn.boost.org/svn/**boost/sandbox/conversion/libs/**
> conversion_ext/doc/html/boost/**conversion/users_guide.html#**
> boost.conversion.users_guide.**tutorial.proto<https://svn.boost.org/svn/boost/sandbox/conversion/libs/conversion_ext/doc/html/boost/conversion/users_guide.html#boost.conversion.users_guide.tutorial.proto>
> ).
>

Ah, okay, I did see this, but on a first pass it wasn't clear to me what was
going on...a few more passes and now I understand.  But you're right, this
isn't a clean solution...

- Jeff