[LC++]STL and auto_ptr woes

[Charles Randle]

Hi All ,

I am using the STL to store pointers to objects which are expensive to copy 
(hence the pointers.

I know it isn't a good idea to use the auto_ptr class with STL classes but I 
don't readily remember why could anyone tell me why the following wouldn't 
be a good idea ?

::std::map < 
::std::string,::std::pair<auto_ptr<someobject1>,auto_ptr<someobject2> > > 
bigMap;

Given that the above isn't a good idea I have the following:

::std::map < ::std::string , ::std::pair<someobject1 *,someobject2 *> > 
BigMap2

However when I assign the pointers to an auto_ptr object as in:

::std::auto_ptr<someobject1> vb = BigMap2["located"].second.first;

the compiler gives the following error:

simple.cpp:52:conversion from 'someobject1*' to non-scalar type 
'std::auto_ptr<someobject1>' requested


What is the reason for this error and what can I do to fix it ???


Best Regards,
Charles Randle

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