The easiest way to start learning about this interface is to try it out. This section shows how to use the curl command line tool to execute sample queries.
results[] contains an array of bulk load result objects, one for each result. Each time the API executes, this property is cleared, and each time a API completes, the array is populated. If there are no results to report, the .length property of this array will be set to 0. Therefore, results will never be null, and you can always safely check for results.length == 0.