Re: [boost] [ptr_container] Can't store a pointer to const in multimap?

Subject: Re: [boost] [ptr_container] Can't store a pointer to const in multimap?
From: Stewart, Robert (Robert.Stewart_at_[hidden])
Date: 2009-06-15 15:07:55

Amit Kumar wrote
On Monday, June 15, 2009 1:33 PM
>
> Please consider the following code:
>
> #include "boost/ptr_container/ptr_map.hpp"
>
> int main()
> {
>         typedef boost::ptr_multimap<char, const int> M;
>
>         M m;
>         char c = 'c';
>
>         int* j = new int(7);
>
>         m.insert(c, j);
>
>         return 0;
> }
>
> The gcc 4.3.3 compiler fails to compiler the above code. Am I doing
> something wrong by inserting a non-const? Can't I store a
> pointer to const in the multimap?

I don't know anything about that particular container, but I can well imagine that you've declared the value type to be immutable, so is it a surprise you can't change one?

_____
Rob Stewart                           robert.stewart_at_[hidden]
Software Engineer, Core Software      using std::disclaimer;
Susquehanna International Group, LLP  http://www.sig.com

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