allocator question (reposted here... sorry for the mistake)

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Hi to all,

when passing an allocator to SEVERAL containers at the same time, can we
rely on the "rebind" mechanism assuming that each container is able to
select its own allocator?
for example: is the following ok?


template <class T, class allocator_t>
class MyContainer
{
std::vector<T, allocator_t> v_;
std::map<T, int, std::less<T>, allocator_t> m_;
};


or should we be verbose and deduce the correct allocators out of the
sub-containers:

template <class T, class allocator_t>
class MyContainer
{
typedef typename allocator_t::template rebind<T>::other rebind1_t;
std::vector<double, rebind1_t> v_;

typedef typename allocator_t::template rebind< std::pair<const T,
int>::other rebind2_t;
// etc...

};


of course version #1 and version #2 declare a class whose members have
different types (say, m_ is map<T,int, ... allocator<T> > and map<T,int, ...
allocator< std::pair<...> > >), but apart from that, are they "functionally"
equivalent?



.

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