[boost] [property map] Document Error?

From: Wang Weiwei (wwwang_at_[hidden])
Date: 2006-07-11 21:24:37

 Hello,

I'm reading the doc of Boost Property Map, in the part for identity_property_map, it is said, in the 1st table, that the type "boost::property_traits<identity_property_map>::value_type" is void, and that of key_type is also void. 

But in the file property_map.hpp, I found,

  struct identity_property_map
  // ... 
  {
    typedef std::size_t key_type;
    typedef std::size_t value_type;
  // ... 
   }

It seems that the key_type and value_type should both be std::size_t.

Am I misunderstanding or is it a document error?

Thanks.

Max