[Boost-users] [ptr_container] Abstract Key type in ptr_map<Key, Val> impossible?

Subject: [Boost-users] [ptr_container] Abstract Key type in ptr_map<Key, Val> impossible?
From: Mikhail Levin (svarneticist_at_[hidden])
Date: 2010-06-27 22:39:05

Hello,

The following code would not compile.

struct Key {
bool operator<(const Key&) const;
   virtual void blah() const = 0;
};

struct Val {
   /*  */
};

boost::ptr_map<Key, Val> map;

Although
boost::ptr_set<Key> set;
seems to work.