Boost logo

Boost :

Subject: Re: [boost] [variant] awkward recursion
From: Dave Abrahams (dave_at_[hidden])
Date: 2012-10-29 17:33:42

on Mon Oct 29 2012, Mathias Gaunard <> wrote:

> On 29/10/12 20:29, Dave Abrahams wrote:
>> Using recursive_variant_ works out quite nicely, except that
>> it doesn't allow me to separately declare "object" and "array" and
>> re-use them in the definition of "value":
>> typedef boost::make_recursive_variant<
>> null
>> , std::string
>> , double
>> , std::map<std::string, boost::recursive_variant_>
>> , std::vector<boost::recursive_variant_>
>> , bool
>> >::type value;
> I'd use this method, it's clearly the cleanest.
> I don't understand what's your problem with it.

As I had feared, and as
demonstrates, extra dynamic allocations will be used to store maps and
vectors (or anything at all?) in the variant.

Dave Abrahams
BoostPro Computing                  Software Development        Training             Clang/LLVM/EDG Compilers  C++  Boost

Boost list run by bdawes at, gregod at, cpdaniel at, john at