On Fri, Oct 23, 2009 at 5:00 PM, Seggy Umboh <[email protected]> wrote: > One thing I have found useful is to fire up js on the command line and just > assign a sample document to the variable doc, then run the map function on > that.
Sounds cool, if you put together a blog post on the technique I bet people (including me) would read it. > > On Fri, Oct 23, 2009 at 4:18 AM, Rajkumar S <[email protected]> wrote: > >> Hi, >> >> Thanks, I had caught this bug and fixed it in the map, but did not >> update the mail. I just wanted the sum. but right now I am not using a >> reduce function just a map. Even for that I am not getting a result. >> >> Any way I am just learning the ropes so might take some time before I >> figure out the stuff :) >> >> raj >> >> On Fri, Oct 23, 2009 at 6:40 AM, Seggy Umboh <[email protected]> >> wrote: >> > It looks like you just want to find out how many rows were emitted? That >> > would just be the typical sum right? >> > return sum(values); >> > >> > >> > >> > js> var v = 6 >> > js> 0 + v.length >> > NaN >> > >> > >> > >> > On Wed, Oct 21, 2009 at 11:45 PM, Rajkumar S <[email protected]> >> wrote: >> > >> >> On Wed, Oct 21, 2009 at 9:48 PM, Paul Joseph Davis >> >> <[email protected]> wrote: >> >> > I suspect "return values;" is the culprit here. That's pretty much >> >> guranteed >> >> > to cause you problems as the data grows recursing up the tree. 0.10.0 >> >> even >> >> > detects this and throws an error to avoid precisely this issue. >> >> > >> >> > It's been discussed a couple times on the list but my stomach is >> >> rumbling. >> >> >> >> That reduce function used in that log was the following. >> >> >> >> function(keys, values, rereduce) >> >> { >> >> length = 0; >> >> if (rereduce){ >> >> for(var v = 0; v < values.length; v++){ >> >> length = length + v.length; >> >> } >> >> } else { >> >> length = values.length; >> >> } >> >> return length; >> >> } >> >> >> >> The reduce function should returns a single integer and not cause data >> >> to grow. Let me try with simpler map with no reduce and will report >> >> the results. >> >> >> >> with regards, >> >> raj >> >> >> > >> > -- Chris Anderson http://jchrisa.net http://couch.io
