Lists Allowing for Switching Values

[Jeroen Bollen]

Is there a way in D to have a list that allows you to shift 
around values? I'm creating a cache and I would like to keep a 
log of when an item was last accessed so when the cache shrinks 
or is about to overflow I can delete the items that haven't been 
accessed in a while.

I would like to be able to push to the back and pop from the 
front. Do note that I would like to pop from the front, and not 
from the back, as I want the oldest items to be popped out.

I would like the be able to search if the item is actually in the 
list. If no such functionality exists yet I could alternatively 
implement it myself; it's not crucial.

I would like to be able to switch items around. This allows me 
when an item already in the list is accessed, I can put it back 
at the back, where the most recent items reside.

Does such a feature exist already in D, is there perhaps a better 
approach about doing this?