int swapCount = 0;
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Use simple markup to alter mail content。关于这个话题，safew官方版本下载提供了深入分析
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，详情可参考WPS下载最新地址
Our effect pipeline handles the Success and Failure cases automatically. If a function returns Success, the subsequent function in line will be called. In the case of a Failure, the pipeline terminates.
Russell Brandom。51吃瓜对此有专业解读