I'm currently using a version of ObjectSpace's STL implementation with
Visual C++ 4.0.  I'm having problems compiling code that contains the
following container declaration:

map< string, smart_ptr< obj >, less< string > > m_map;

This implementation of STL requires that both the key (string) and value
(smart_ptr< obj >) classes implement the less-than operator.  I'm having
problems finding anything in the standard that specifies that a "value"
class must implement the less-than operator.  Should I expect all
implementations of STL to require a less-than operator for "value"
classes in map/multimap objects?

Jim Harris
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