Dialyzer doesn't warn about this coding pattern when I run it, and I'm somewhat 
partial to the way it is now.  It's not much of an issue in this particular 
statement, but when we have nested case/try/if clauses it can be difficult to 
figure out the possible values that the variable can take if it's only assigned 
outside the whole code block.  I don't think I've ever seen coding conventions 
that express a preference one way or the other.  Maybe I missed them.  If 
dialyzer does warn about it we should definitely change it.  Best,

Adam

On Jan 31, 2011, at 6:07 AM, Robert Dionne wrote:

> Thanks Adam,
> 
>  I also had broken up 988 to move some into 902 and the rest into 462. I'll 
> rearrange things based on this commit.
> 
>  One question I have is about a re-factor I did in 988 involving multiple 
> assignments to a variable[1]. This re-factor does nothing to change the 
> behavior of the code. Dialyzer does throw a warning about it, which is what 
> motivated it but I also think the re-factor is clearer and slightly more 
> readable as "Conflict" is assigned in one place. I've seen this before so I'm 
> wondering whats the preference on this.
> 
> Cheers,
> 
> Bob
> 
> 
> [1] 
> https://github.com/bdionne/couchdb/commit/49bcb6df05dfefdcee40fea3d0fcded2859b6bf1#L0L30
> 
> 
> 
> On Jan 30, 2011, at 7:50 PM, Adam Kocoloski wrote:
> 
>> I'm tired of waiting for the JIRA maintenance window to end so I'm just 
>> going to comment here.  I've combined pieces of Bob Dionne's various patches 
>> from this ticket and COUCHDB-988 into a single commit here:
>> 
>> https://github.com/kocolosk/couchdb/commit/1efd87
>> 
>> It focuses on the merge code/tests/docs.  The actual change to the merge 
>> code is small and has been discussed before; I only replaced "or" with 
>> "orelse".  The rest of the commit involves reorganizing and augmenting the 
>> tests and providing a version of Paul's description of the key tree as the 
>> module @doc.  I think it's high time we get this into trunk.  Best,
>> 
>> Adam
> 

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