[MERGE] Reading pack-names triggers 3 reads

[Robert Collins]

On Mon, 2008-11-10 at 19:18 -0600, John Arbash Meinel wrote:
> 
> So my feeling was that the fix is to minimize the number of times that
> self._size is None, rather than hacking around it here. I don't know
> your use case, but is there a reason you have enormous index files,
> whose size you don't know and which you never will want to access over
> an HTTP connection?

Largely performance testing; I like to dig into indices cheaply to see
what the internal structure etc is; and having to dig up the size first
to avoid thrashing the machine would be a nuisance - and like I said, it
makes the API less predictable.

-Rob
-- 
GPG key available at: <http://www.robertcollins.net/keys.txt>.
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