[elephant-devel] Re: map-index

[Ian Eslick]

I just pushed a patch to the main repository that I hope made the map- 
index a little easier to read (if you ignore the variable capture  
stuff in the macros) and also makes it more efficient along the lines  
of what Alex suggests.  This passes all tests under BDB.

Please check it out!

Ian

On Nov 30, 2007, at 12:24 PM, Alex Mizrahi wrote:

> ??>> while in my opinion it would be enough to do this:
> ??>>
> ??>> (cursor-pfirst c) => 1
> ??>> (cursor-pnext c) => 2
> ??>> (cursor-pnext c) => nil
>
> IE> What if there are more than two values = 2?  This will only get  
> the
> IE> first one.
>
> so you say that cursor-pnext is same as cursor-pnext-nodup?
> i thought that it just iterates sequence regardless whether there are
> duplicates or not -- just what we want.
>
> the BDB documentation says this:
> ----
> Otherwise, the cursor is moved to the next key/data pair of the  
> database,
> and that pair is returned. In the presence of duplicate key values,  
> the
> value of the key may not change.
> ----
>
> looks like it means it works fine with duplicate keys, but wording is
> vague..
>
>
>
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