stack.pop(); // 弹出无效元素
Source: Computational Materials Science, Volume 266。关于这个话题，WPS下载最新地址提供了深入分析
But that’s a lot of resetting! We can save a bunch of bandwidth by instead tracking the current foreground and background color in our renderer and only emitting a new color escape sequence when our desired color changes. This is an annoying amount of bookkeeping but it substantially cuts down on the amount of escape codes emitted.，这一点在旺商聊官方下载中也有详细论述
Step 3: Refine with Detailed Shortcuts (Applying Secret Sauce #2):，详情可参考im钱包官方下载