Re: Reduce function results

[Tom Sante]

On 20/05/10 23:52, David Goodlad wrote:
On Thu, May 20, 2010 at 9:38 PM, Tom Sante<tom.sa...@gmail.com>  wrote:
Hi,
I have a reduce function like this:
[snip]
So for some reason if there is only 1 element to be reduced, on the line of
res[v_n]={'mi':v,'ma':v,'c':1,'t':v};
v becomes v={} and not the actual number. Any ideas why?

I tested the reduce function with the command line 'js' and send it the
above test keys manually as function argument and then it does result in the
correct return:
"01:00:000074" ->  {raw: {mi: -0.213, ma: -0.213, c: 1, t: -0.213}}
"01:00:000084" ->  {raw: {mi: -0.213, ma: -0.213, c: 1, t: -0.213}}

Sounds like you need to specify group_level; Try playing around in
Futon, you'll see a group_level dropdown.

Dave

Why would I need a group_level parameter?
My key is a simple string "01:00:000074".
Its my values don't get correctly generated by couchjs, since it does 
out but proper values in normal commandline js.

        var v = new Number(values[val][v_n]);
        if(res.hasOwnProperty(v_n)){
            res[v_n].mi = Math.min(v,res[v_n].mi);
            res[v_n].ma = Math.max(v,res[v_n].ma);
            res[v_n].c++;
            res[v_n].t += v;
        }else{
            res[v_n]={'mi':v,'ma':v,'c':1,'t':v};
        }

It seems that in the above part in the 'else' case the v isn't a number 
but an empty object {}