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1 前言 自大学起，已经写过好几年的东西，写作工具和流程也反复折腾过好多回. 目前的写作流程已经很流程顺手，所以想分享一下。 2 写作工具 我不倾向任何专用格式的写作软件（如Word）, 或者笔记云服务（EverNote，xx笔记等）。 ...

1 前言 有心仪工作的城市房价太高，而房价合适的城市没有心仪的工作。 梦想买不起，故乡回不去。 眼看着大城市一座座高楼拔地而起，却难觅容身之所。 为什么房子这么贵？为什么归属感这么低？为什么非要孤身在外地闯荡，不能和父母家人在一起？ ...

1 Definition In computer science, a topological sort or topological ordering of a directed graph is a linear ordering of its vertices such that for every directed edge uv from vertex u to vertx v, u comes before v in the ordering. It sounds pretty academic, but I am sure you are using topological sort unconsciously every single day. 2 Application Many real world situations can be modeled as a graph with directed edges where some events must occur before others. Then a topological sort gives an order in which to perform these events, for instance: ...

1 前言 「最好的学习方式」 在如今打广告也需要遵守广告法的时代，用这样的标题来描述某个学习方法难免会让人觉得言过其实，不客气的朋友可能会直接说「营销味」十足。 ...

1 前言 秦人不暇自哀而后人哀之，后人哀之而不鉴之，亦使后人而复哀后人也 每个朝代灭亡之后，就会由下一个朝代的史官编写，如元朝灭亡之后，就由明朝来撰写《元史》。 ...