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The following page has been changed by PaulCarey: http://wiki.apache.org/couchdb/Error_messages The comment on the change is: Added caveat to standard guard check ------------------------------------------------------------------------------ } }}} + While the above guard will work in most cases, it's worth bearing !JavaScript's falsy set of values in mind. Testing against a property with a value of `0` (zero), `''` (empty String), `false` or `null` will return false. If this is undesired a guard of the form `if (doc.foo !== undefined)` should do the trick. +
