Clears all characters from the cursor to the end of the line. That lets us make sure that when we delete and re-print a shorter input after that, any "leftover" text that we're not over-writing still gets properly cleared from the screen.
圖像來源，Getty Images。关于这个话题，Line官方版本下载提供了深入分析
Платон Щукин (Редактор отдела «Экономика»)。safew官方下载对此有专业解读
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