Re: [Boost-users] [ptr_container] view_clone_allocator with associative containers

Subject: Re: [Boost-users] [ptr_container] view_clone_allocator with associative containers
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2010-02-28 22:55:29

AMDG

Matthias Vallentin wrote:
> I cannot get the view_clone_allocator to work with associative containers, as
> in the example below:
>
>     boost::ptr_vector<int> vec;
>     boost::ptr__map<std::string, int, boost::view_clone_allocator> map;
>
>     int* i = new int(42);
>     vec.push_back(i);
>
>     std::string k("foo");
>     map.insert(k, i);
>
> >From the error message, it seems that the CloneAllocator is still of
> type boost::heap_clone_allocator.
>
> Why is this failing? It seems intuitive to specify the allocator as
> third parameter, similar to the example with ptr_vector where the 
> allocator is the second argument.
>   

The allocator is the fourth argument of ptr_map.  The third argument
is the comparison predicate.

In Christ,
Steven Watanabe