Hey Jan,
function(doc) { for (var v in doc.users) { emit(doc.users[v], doc); }if you leave out the `var` you create a global variable (as opposed to a local variable in JS and that can have funky effects.
What he said.
function(doc) { if(doc.users) { for (var v in doc.users) { emit(doc.users[v], doc); }}protects you against errors for documents that doesn't have a `users` property.
Yeah, I was going to add that but was being lazy ;) apologies! Cheers Simon
