From: Zach Laine (whatwasthataddress_at_[hidden])
Date: 2020-09-25 13:09:12
On Fri, Sep 25, 2020 at 6:11 AM Mathias Gaunard via Boost
> On Thu, 24 Sep 2020 at 10:57, Andrzej Krzemienski via Boost
> <boost_at_[hidden]> wrote:
> > My understanding of a "vocabulary type" is that it should be usable (not
> > necessarily with maximum efficiency) for *any* usage. In the case of JSON
> > that would mean that I should be able to represent any value that
> > corresponds to a valid JSON when converted to text. I do not think that
> > json::value can claim that without the ability to serialize arbitrarily big
> > numbers.
> I fully agree with this statement.
> json::value *needs* to support arbitrary numbers. It's incomplete without it.
> Maybe the author of multiprecision can advise on the best type to use
> there (gmp or mpfr?).
This is not a reasonable requirement. std::string is the canonical
C++ vocabulary type. On 32-bit systems, it cannot represent 5GB-long
strings. Depending on platform limitations, it usually cannot even
represent more than 2GB-long strings. Computers are limited to finite
resources. Putting finite limits on the representation of all kinds
of values is normal, not unexpected -- this is especially true of
Boost list run by bdawes at acm.org, gregod at cs.rpi.edu, cpdaniel at pacbell.net, john at johnmaddock.co.uk