[Boost-users] std::list customization

Subject: [Boost-users] std::list customization
From: Etienne Philip Pretorius (icewolfhunter_at_[hidden])
Date: 2010-01-30 12:45:53

Hello List,

I know this is not boost specific, but I would appreciate any comments 
about the following.

I have a specific set of values stored in a std::list<unsigned char>. As 
expected I can delete and add items anywhere, since I am using the 
std::list object rearrange its own contents. But here is the problem - 
when I have already decided that item at position 13 should always 
remain at position 13 if the list has 13 or more objects in it...

If I remove an item from the beginning then the item at position 13 
becomes the item at position 12, while this is undesired - the effect of 
shifting everything else on by one value is desired.

Some examples of what I require:

Fixed position marked with [].

a,b,c,[d],e,f

pop_front() is called

b,c,e,[d],f

This list object should also work when inserting items and keep those 
with fixed positions at their position if the object size allows it.

Any suggestions, Ideas on how to implement this would be greatly 
appreciated.

Kind Regards,
Etienne