Is your feature request related to a problem?

I wish to construct pandas.DataFrame from iterable of dataclasses.dataclass as from iterable of tuples DataFrame.from_records. The rationale behind is that data classes is more typed object than general tuple or dictionary. Also, data classes more memory efficient than tuple's. It makes data classes attractive to use them instead of `di

OkDownload Version

1.0.5

Problem Describe

判断任务是否在运行的代码：

public synchronized boolean isRunning(DownloadTask task) {
        Util.d(TAG, "isRunning: " + task.getId());
        for (DownloadCall call : runningSyncCalls) {
            if (call.isCanceled()) continue;
            if (call.equalsTask(task)) {
                return true;
            }
        }