THIS IS A WORK IN PROGRESS search PATTERN in files but exclude files whose path matches EXCLUDE_PATH_PATTERN ! means exclude, -g option expects GLOB not regex. $ rg hello -g !*node_modules*

THIS IS A WORK IN PROGRESS fetch a huge code base partially reference > git clone ssh://git@example.com/.git --depth 1 --branch release use the following command to further fetch all histor...

THIS IS A WORK IN PROGRESS 这本书确实没有讲到事件循环 线程和锁 使用锁元语来完成并发程序的同步和互斥需求，很容易出错，不讨论了。 函数式编程 用不可变的状态，其他的跟下面的CSP 几乎一模一样，不讨论了。 Clojure 都是语言特性，不讨论了 Actor actor 是一种由运行时维护的实体，actor 之间可以发送消息，消息是一种不可变的数据...

THIS IS A WORK IN PROGRESS 少做工 更优算法 利用领域知识减少做工 last N digits of fibonacci sequence is cyclic, thus one can calculate last N digits of the Xth number in the sequence with manageable time and ...

THIS IS A WORK IN PROGRESS 你说一下什么叫做强缓存和协商缓存 其实本来不存在强缓存和协商缓存的概念。所有的缓存系统都有几个关键属性 缓存的元数据是多少 一般情况下缓存的键就是网址。但是也可以用Vary 标头字段来注明你需要额外的键，例如Vary: Accept-Language 就表示需要把网址和Accept-Language 标头作为缓存的键。 另外还需...

placeholder for images https://placehold.co/600x400/f00/0f0?text=libq%20debug\ngreen%20on%20red copy a directory and its git history This article outlines the cherry-picking approach. Cr...

THIS IS A WORK-IN-PROGRESS This post will be a summary of programming assignments of this free course on edx. These programming assignments builds a compiler for the COOL programming. This languag...

if statements Wrap boolean expressions with [ ]. Use (( )) and == to compare numbers. Use = to compare strings. There must be a space after [ of (( and before ] or )). if echo "$str" | grep -q ...

THIS IS A WORK-IN-PROGRESS This free online course explains inner-workings of various distributed systems. Frangipani Frangipani implements a shard storage among computers. There is Frangipani s...

本文大致摘要了由 Chad Birch 撰写的这篇文章 在这里游玩经典的 Pacman 游戏 游戏中有四种颜色的反派它们都具有非常突出的个性，读者可在上面的链接中体验。 八十年代的开发者们是如何给它们赋予个性的呢？ 该游戏在一固定的迷宫地图中进行，只考虑角色的移动时，地图可用正方形网格建模。各个角色只能沿着 迷宫的路做上下左右四个方向的移动。 反派们是如和决定自己的行动轨迹的呢？ ...