[elephant-devel] Re: map-index

[Ian Eslick]

Well, a quick experiment proves your point.  I'm not sure why I didn't  
take advantage of that earlier.  There were a bunch of small  
surprising issues that I recall making the code unpleasant, but I  
can't recall the exact reasons.  Given all the tests we have covering  
this now, I think it's safe to create a parallel version that should  
be cleaner and see if you/we can improve on this otherwise messy  
creation.

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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