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<time title="创建时间：2017-02-17 21:00:00" itemprop="dateCreated datePublished" datetime="2017-02-17T21:00:00+08:00">2017-02-17</time>
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<p><img src="/img/simluation/3.jpg"></p>
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<p>引自《三体》后记：</p>
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<p>我曾经陷入【宇宙文明点状化】的这种思维游戏中不可自拔<br>那个时期，我还编过一个宇宙点状文明体系总体状态的模拟软件，将宇宙间的智慧文明简化为点，每个点只具有描述该文明基本特征的十几个简单参数，然后将文明的数量设置得十分巨大，在软件中模拟这个体系的整体演化过程。<br>软件运行时最多的一次曾在十万光年半径内设定了三十万个文明，这个用现在看来很简陋的TUBOC编的程序在286机上运行了几个小时，结果很有趣。</p>
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<p>模拟地址：<a href="http://xtutu.github.io/simulation">simulation</a><br>知乎回答：<a target="_blank" rel="noopener" href="https://www.zhihu.com/question/21296837/answer/146050873">知乎地址</a></p>
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<p>之前一段时间做了一个VR项目的Demo。一款p2p的竞技类游戏，玩法类似皇室战争。<br>现在已经结束了，放一些图片和视频作为记录。<br><img src="/img/vr/0.png"></p>
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<a href="/git-submodule-and-pull-request/" class="post-title-link" itemprop="url">Git submodule & pull request ! 让我们啃下这块骨头！</a>
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<p>实际上submodule 与 pull request，并没有什么直接关系。<br>比如一些团队采用code-review的方式进行协作，那么他们可能只用到pull request。<br>这里之所以放在一起，是因为很多场景用到了其中一个，就少不了另一个。<br><strong>那么，什么情况下我们需要用到 submodule 和 pull request呢？！</strong></p>
<hr>
<p>假设我们的项目是用git来管理，这时我们需要添加一个第三方库的源码（以下简称lib），而这个lib，也是通过git来管理。<br>这种情况，一般有两种选择：</p>
<ol>
<li><strong>把lib的源码复制到我们的项目中，把它作为当前项目的源码进行管理。</strong></li>
<li><strong>通过git clone的方式，把lib整个放到我们的项目中（保留它自身的git信息），作为git的submodule。</strong></li>
</ol>
<p>这两种方式各有利弊，接下去就来好好分析一下。</p>
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<p>最近一直在Windows下做开发，自带的cmd可用性太差。<br>虽然也装了GitBash（MINGW64），但是终归和Mac下的Iterm2 + oh my zsh无法比。<br>所以就花了点时间，去寻找可以在Windows下用的类似工具。<br><strong>看了一圈之后，最后决定用ConEmu + Babun来实现。</strong><br><img src="/img/cmdtools/1.jpg"></p>
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<p>中午吃完饭，居然下起了雨，不过好在下的不大。在回公司的路上，小k问了我上面这个问题。<br>这可有点难到我了，倒不是问题本身有多难，而是通俗的解释问题的结论有点难。<br>毕竟这个问题涉及到各种数学计算，细节太多，无法直接描述。</p>
<p><strong>既然计算起来比较麻烦，那就只能通过模拟实验来展示结论！</strong></p>
<p><img src="/img/rain/0.jpg" alt="全景"></p>
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<a href="/good-coder-and-bad-coder/" class="post-title-link" itemprop="url">普通程序员、优秀程序员差距能有多大？！</a>
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<p>晚上和同事小k一起吃饭回家（小k是公司的一名美术），他在路上问了我这个问题。<br>于是就有了下面的对话。</p>
<hr>
<p><strong>我：这个问题啊，我得想想怎么才能比较通俗的和你解释。（如果直接说，算法能力、架构能力强，小k肯定是听不懂的）</strong></p>
<p><strong>我：哦，想到了！还记的小学的数学课本上，有一则关于高斯的故事吗？大概就是说“老师布置了一道题目，让大家算出从1加到100是多少”</strong></p>
<p>小k：嗯，有点印象。</p>
<p><strong>我：对于这个问题，普通程序员，可能就是一个一个的做加法，需要运算99次。而优秀的程序员会写出（100 + 1） * 100 / 2的公式，只要3次运算就搞定了。</strong></p>
<p>小k有点懵，貌似不怎么理解为什么可以这样算出结果。。。</p>
<p><strong>于是我继续解释：你可以试着想象一下 “把1+2+…+100写在纸上，然后再在它的下一排，倒过来写100+99+…+1<br>大致就是这样：”</strong></p>
<blockquote>
<p>1+2+…+100<br>100+99+…+1</p>
</blockquote>
<p><strong>我：可以发现，上下两两相加，就变成了： 101+101+…+101。总共有100个101，因为这样算实际上是做了两次1+…+100，所以我们还需要除以2。</strong></p>
<p>小k似乎懂了，但是过了一会又说：等一下，为什么都是101，中间的50+50，不是应该是100吗？</p>
<p><strong>看到小k，问出这样的问题，我只好继续解释：1到100，是偶数个，只有奇数才有中间的那个数字，比如1，2，3。</strong></p>
<p>小k：哦哦哦，懂了</p>
<p>至此，终于向小k解释完这个问题。<br><em>如果小k去当程序员的话，应该算不上优秀… :-) 哈哈哈</em></p>
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<h2 id="前言"><a href="#前言" class="headerlink" title="前言"></a>前言</h2><p>产品在早期的研发过程中，特别是初创团队，可能根本就没有专门的测试人员。（当初我参与的第一个手游项目就是这样，但也因此，项目组的程序、策划、美术每个人，都得反反复复跑游戏，充当测试的角色）。</p>
<p>测试是保证产品质量的一个重要环节，而测试人员本身的专业能力直接影响测试质量。<br><strong>作为程序员，经常会听到到面向对象和面向过程这类词汇。那么“测试人员”，是否也有类似的分类呢？！答案是肯定的。</strong><br>在我平时的工作中，接触到的测试人员，基本都是本文标题中所提到的面向客户端测试，能够做到面向服务端测试的寥寥无几。</p>
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<p>后记：已用<strong>VSCode</strong>代替，因为所用的硬盘不是SSD，Atom在大项目上的表现实在是卡…</p>
<p>很早很早之前看到有服务端的同事在用<a target="_blank" rel="noopener" href="https://atom.io/">Atom编辑器</a>，当时还是蛮吃惊的。<br>因为印象中的Atom，就是一个拥有高贵血统的体验产品：背景强大，理念前卫，但是Bug还比较多，并不适合作为首选的IDE。</p>
<p>这两天正好有空，就折腾了下。用下来，感觉还是很不错的！ </p>
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<p><em>InfluxDB简明手册 操作教程 中文文档。</em> </p>
<p>手册不断完善中，欢迎 <strong>pull request!</strong><br><strong>如果对你有所帮助，请给一个Star!</strong><br>项目地址: <a target="_blank" rel="noopener" href="https://github.com/xtutu/influxdb-handbook">https://github.com/xtutu/influxdb-handbook</a></p>
<hr>
<p>手册在线地址: <a target="_blank" rel="noopener" href="https://www.gitbook.com/read/book/xtutu/influxdb-handbook">https://www.gitbook.com/read/book/xtutu/influxdb-handbook</a> </p>
<p><img src="/img/20160226164436.jpg"></p>
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