c++ - Storing pointers to const objects in boost::ptr_unordered_map -

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i can't seem make boost::ptr_unordered_map<uint32_t, const foo> work - underlying implementation looks it's casting things void*.

do have bite bullet , make methods wrap access const_cast<foo*> when inserting items, or there i'm missing here? there way store pointers const objects (const foo*)?

it looks isn't possible.

a workaround wrap access ptr_unordered_map. insert method should take const auto_ptr , const_cast<foo*> insert it.

if hand auto_type client code when removing elements, you'll need unpack pointer , transfer const auto_ptr or similar make ownership transfer explicit without leaking non-const references.

this sufficient use case, don't need expose iterator behaviour - it's pure single-element insert/release/look-ups.


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