On Sat, Apr 25, 2009 at 10:39:12PM +0100, Brian Candler wrote:
> I am considering using a reduce function for a low-ordinality value
Of course I meant low cardinality.
FWIW, here's a working implementation:
function(ks, vs, co) {
if (co) {
var result = vs.shift();
for (var i in vs) {
for (var j in vs[i]) {
result[j] = (result[j] || 0) + vs[i][j];
}
}
return result;
} else {
var result = {};
for (var i in ks) {
var key = ks[i];
result[key[0]] = (result[key[0]] || 0) + 1;
}
return result;
}
}
Regards,
Brian.
