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Create branch ${ searchTerm }
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<!DOCTYPE html><html lang="zh-CN"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width"><meta name="theme-color" content="#222"><meta name="generator" content="Hexo 6.3.0"><link rel="preconnect" href="https://fonts.googleapis.com" crossorigin><link rel="preconnect" href="https://cdnjs.cloudflare.com" crossorigin><link rel="apple-touch-icon" sizes="180x180" href="/images/apple-touch-icon-next.png"><link rel="icon" type="image/png" sizes="32x32" href="/images/favicon-32x32-next.png"><link rel="icon" type="image/png" sizes="16x16" href="/images/favicon-16x16-next.png"><link rel="mask-icon" href="/images/logo.svg" color="#222"><meta name="google-site-verification" content="2X6S9P7CAjXjVvw8YyQR8pCu-B0oEu7O9quLgxXuWyA"><meta name="baidu-site-verification" content="dV8JGNzi0c"><script>setTimeout(function(){var 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src="/js/config.js"></script><meta name="description" content="learn from zero,技术博客，Nicksxs，史学森"><meta property="og:type" content="website"><meta property="og:title" content="Nicksxs&#39;s Blog"><meta property="og:url" content="https://nicksxs.me/index.html"><meta property="og:site_name" content="Nicksxs&#39;s Blog"><meta property="og:description" content="learn from zero,技术博客，Nicksxs，史学森"><meta property="og:locale" content="zh_CN"><meta property="article:author" content="Nicksxs"><meta property="article:tag" content="Nicksxs,史学森,米方方,米方方的男朋友,森哥"><meta name="twitter:card" content="summary"><link rel="canonical" href="https://nicksxs.me/"><script class="next-config" data-name="page" type="application/json">{"sidebar":"","isHome":true,"isPost":false,"lang":"zh-CN","comments":"","permalink":"","path":"index.html","title":""}</script><script class="next-config" data-name="calendar" type="application/json">""</script><title>Nicksxs's Blog - What hurts more, the pain of hard work or the pain of regret?</title><script async src="https://www.googletagmanager.com/gtag/js?id=UA-61358619-1"></script><script class="next-config" data-name="google_analytics" type="application/json">{"tracking_id":"UA-61358619-1","only_pageview":false}</script><script src="/js/third-party/analytics/google-analytics.js"></script><script src="/js/third-party/analytics/baidu-analytics.js"></script><script async src="https://hm.baidu.com/hm.js?20f33b3c0c0eff9b1522999c0015646d"></script><noscript><link rel="stylesheet" href="/css/noscript.css"></noscript><link rel="alternate" href="/atom.xml" title="Nicksxs's Blog" type="application/atom+xml"></head><body itemscope itemtype="http://schema.org/WebPage"><div class="headband"></div><main class="main"><header class="header" itemscope itemtype="http://schema.org/WPHeader"><div class="header-inner"><div class="site-brand-container"><div class="site-nav-toggle"><div class="toggle" aria-label="切换导航栏" role="button"><span class="toggle-line"></span> <span class="toggle-line"></span> <span class="toggle-line"></span></div></div><div class="site-meta"><a href="/" class="brand" rel="start"><i class="logo-line"></i><h1 class="site-title">Nicksxs's Blog</h1><i class="logo-line"></i></a><p class="site-subtitle" itemprop="description">What hurts more, the pain of hard work or the pain of regret?</p></div><div class="site-nav-right"><div class="toggle popup-trigger"><i class="fa fa-search fa-fw fa-lg"></i></div></div></div><nav class="site-nav"><ul class="main-menu menu"><li class="menu-item menu-item-home"><a href="/" rel="section"><i class="fa fa-home fa-fw"></i>首页</a></li><li class="menu-item menu-item-about"><a href="/about/" rel="section"><i class="fa fa-user fa-fw"></i>关于</a></li><li class="menu-item menu-item-tags"><a href="/tags/" rel="section"><i class="fa fa-tags fa-fw"></i>标签</a></li><li class="menu-item menu-item-categories"><a href="/categories/" rel="section"><i class="fa fa-th fa-fw"></i>分类</a></li><li class="menu-item 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zero,技术博客，Nicksxs，史学森</div></div><div class="site-state-wrap site-overview-item animated"><nav class="site-state"><div class="site-state-item site-state-posts"><a href="/archives/"><span class="site-state-item-count">186</span> <span class="site-state-item-name">日志</span></a></div><div class="site-state-item site-state-categories"><a href="/categories/"><span class="site-state-item-count">148</span> <span class="site-state-item-name">分类</span></a></div><div class="site-state-item site-state-tags"><a href="/tags/"><span class="site-state-item-count">285</span> <span class="site-state-item-name">标签</span></a></div></nav></div><div class="links-of-author site-overview-item animated"><span class="links-of-author-item"><a href="https://github.com/nicksxs" title="GitHub → https:&#x2F;&#x2F;github.com&#x2F;nicksxs" rel="noopener" target="_blank"><i class="fab fa-github fa-fw"></i>GitHub</a> </span><span class="links-of-author-item"><a href="mailto:nicksxs1202@gmail.com" title="E-Mail → 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rel="tag">condition</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/docker/" rel="tag">docker</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/dp/" rel="tag">dp</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/dubbo/" rel="tag">dubbo</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/echo/" rel="tag">echo</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/environment/" rel="tag">environment</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/gap-lock/" rel="tag">gap lock</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/gc/" rel="tag">gc</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/git/" rel="tag">git</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/grep/" rel="tag">grep</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/hadoop/" rel="tag">hadoop</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/icu4c/" rel="tag">icu4c</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/im/" rel="tag">im</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/is-not-null/" rel="tag">is not null</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/is-null/" rel="tag">is null</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/j-u-c/" rel="tag">j.u.c</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/java/" rel="tag">java</a><span class="tag-list-count">33</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/jvm/" rel="tag">jvm</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/leetcode/" rel="tag">leetcode</a><span class="tag-list-count">40</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/leetcode-155/" rel="tag">leetcode 155</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/linked-list/" rel="tag">linked list</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/linux/" rel="tag">linux</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/lock/" rel="tag">lock</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/mfc/" rel="tag">mfc</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/min-stack/" rel="tag">min stack</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/mq/" rel="tag">mq</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/mvcc/" rel="tag">mvcc</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/mysql/" rel="tag">mysql</a><span class="tag-list-count">6</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/namespace/" rel="tag">namespace</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/next-key-lock/" rel="tag">next-key lock</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/nginx/" rel="tag">nginx</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/nullsfirst/" rel="tag">nullsfirst</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/openresty/" rel="tag">openresty</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/php/" rel="tag">php</a><span class="tag-list-count">4</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/powershell/" rel="tag">powershell</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/procedure/" rel="tag">procedure</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/python/" rel="tag">python</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/read-view/" rel="tag">read view</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/redis/" rel="tag">redis</a><span class="tag-list-count">12</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/scp/" rel="tag">scp</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/signal/" rel="tag">signal</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/sort/" rel="tag">sort</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/spark/" rel="tag">spark</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/ssh/" rel="tag">ssh</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/stack/" rel="tag">stack</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/stream/" rel="tag">stream</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/string/" rel="tag">string</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/swoole/" rel="tag">swoole</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/top/" rel="tag">top</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/uname/" rel="tag">uname</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/unlock/" rel="tag">unlock</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/utf8/" rel="tag">utf8</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/utf8mb4/" rel="tag">utf8mb4</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/utf8mb4-0900-ai-ci/" rel="tag">utf8mb4_0900_ai_ci</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/utf8mb4-general-ci/" rel="tag">utf8mb4_general_ci</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/utf8mb4-unicode-ci/" rel="tag">utf8mb4_unicode_ci</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/value/" rel="tag">value</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/websocket/" rel="tag">websocket</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/zookeeper/" rel="tag">zookeeper</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/zsh/" rel="tag">zsh</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%B8%89%E9%98%B6%E6%AE%B5%E6%8F%90%E4%BA%A4/" rel="tag">三阶段提交</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%B8%8D%E5%8F%AF%E5%8F%98%E5%BC%95%E7%94%A8/" rel="tag">不可变引用</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%B8%9C%E4%BA%AC%E5%A5%A5%E8%BF%90%E4%BC%9A/" rel="tag">东京奥运会</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%B8%A4%E9%98%B6%E6%AE%B5%E6%8F%90%E4%BA%A4/" rel="tag">两阶段提交</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%B8%AD%E5%B1%B1%E8%B7%AF/" rel="tag">中山路</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%B8%AD%E5%BA%8F/" rel="tag">中序</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%B8%AD%E9%97%B4%E4%BB%B6/" rel="tag">中间件</a><span class="tag-list-count">4</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%B8%BE%E9%87%8D/" rel="tag">举重</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%B9%92%E4%B9%93%E7%90%83/" rel="tag">乒乓球</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%BA%8B%E5%8A%A1/" rel="tag">事务</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%BA%8C%E5%8F%89%E6%A0%91/" rel="tag">二叉树</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%BA%92%E6%96%A5%E9%94%81/" rel="tag">互斥锁</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%BB%A3%E7%A0%81%E9%A2%98%E8%A7%A3/" rel="tag">代码题解</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E4%BF%AE%E7%94%B5%E8%84%91%E7%9A%84/" rel="tag">修电脑的</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%81%8F%E5%90%91%E9%94%81/" rel="tag">偏向锁</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%81%A5%E5%BA%B7%E7%A0%81/" rel="tag">健康码</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%85%AC%E4%BA%A4/" rel="tag">公交</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%85%AC%E4%BA%A4%E8%BD%A6/" rel="tag">公交车</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%86%85%E5%AD%98%E5%88%86%E5%B8%83/" rel="tag">内存分布</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%86%85%E5%AD%98%E6%B3%84%E6%BC%8F/" rel="tag">内存泄漏</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%87%86%E5%A4%87/" rel="tag">准备</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%87%8F%E8%82%A5/" rel="tag">减肥</a><span class="tag-list-count">6</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%88%86%E5%B8%83%E5%BC%8F%E4%BA%8B%E5%8A%A1/" rel="tag">分布式事务</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%88%86%E5%B8%83%E5%BC%8F%E9%94%81/" rel="tag">分布式锁</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%88%87%E7%89%87/" rel="tag">切片</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%88%9D%E5%A7%8B%E5%8C%96/" rel="tag">初始化</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%89%8A%E5%B3%B0%E5%A1%AB%E8%B0%B7/" rel="tag">削峰填谷</a><span class="tag-list-count">4</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%89%8D%E5%BA%8F/" rel="tag">前序</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8A%A0%E5%A1%9E/" rel="tag">加塞</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8A%A0%E8%BD%BD/" rel="tag">加载</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8D%95%E4%BE%8B/" rel="tag">单例</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8D%9A%E5%AE%A2%EF%BC%8C%E6%96%87%E7%AB%A0/" rel="tag">博客，文章</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8E%A6%E9%97%A8/" rel="tag">厦门</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8F%8C%E4%BA%B2%E5%A7%94%E6%B4%BE/" rel="tag">双亲委派</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8F%91%E8%A1%8C%E7%89%88/" rel="tag">发行版</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8F%A3%E7%BD%A9/" rel="tag">口罩</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%8F%AF%E5%8F%98%E5%BC%95%E7%94%A8/" rel="tag">可变引用</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%90%90%E6%A7%BD/" rel="tag">吐槽</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%9B%A4%E7%89%A9%E8%B5%84/" rel="tag">囤物资</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%9E%83%E5%9C%BE%E5%9B%9E%E6%94%B6/" rel="tag">垃圾回收</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%9F%BA%E7%A1%80%E8%AE%BE%E6%96%BD/" rel="tag">基础设施</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%A4%A7%E6%89%AB%E9%99%A4/" rel="tag">大扫除</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%AD%97%E7%AC%A6%E9%9B%86/" rel="tag">字符集</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%AE%89%E5%85%A8/" rel="tag">安全</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%AE%B9%E9%94%99%E6%9C%BA%E5%88%B6/" rel="tag">容错机制</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%AF%84%E7%94%9F%E8%99%AB/" rel="tag">寄生虫</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B0%84%E5%87%BB/" rel="tag">射击</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B0%8F%E6%8A%80%E5%B7%A7/" rel="tag">小技巧</a><span class="tag-list-count">5</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B1%80%E5%8F%A3%E8%A1%97/" rel="tag">局口街</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B8%83%E9%9A%86%E8%BF%87%E6%BB%A4%E5%99%A8/" rel="tag">布隆过滤器</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B9%B2%E6%B4%BB/" rel="tag">干活</a><span class="tag-list-count">5</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B9%B4%E4%B8%AD%E6%80%BB%E7%BB%93/" rel="tag">年中总结</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B9%B4%E7%BB%88%E6%80%BB%E7%BB%93/" rel="tag">年终总结</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B9%B6%E5%8F%91/" rel="tag">并发</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B9%B8%E7%A6%8F%E4%BA%86%E5%90%97/" rel="tag">幸福了吗</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%B9%BB%E8%AF%BB/" rel="tag">幻读</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%BA%94%E7%94%A8/" rel="tag">应用</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%BC%80%E8%BD%A6/" rel="tag">开车</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%BC%B1%E5%BC%95%E7%94%A8/" rel="tag">弱引用</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E5%BD%B1%E8%AF%84/" rel="tag">影评</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%89%80%E6%9C%89%E6%9D%83/" rel="tag">所有权</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%89%93%E5%8D%A1/" rel="tag">打卡</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%89%B6%E6%A2%AF/" rel="tag">扶梯</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%8A%80%E6%9C%AF/" rel="tag">技术</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%8B%96%E6%9B%B4/" rel="tag">拖更</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%8D%A2%E8%BD%A6%E7%89%8C/" rel="tag">换车牌</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%8E%92%E5%BA%8F/" rel="tag">排序</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%8E%A5%E9%9B%A8%E6%B0%B4/" rel="tag">接雨水</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%95%B0%E6%8D%AE%E6%BA%90%E5%8A%A8%E6%80%81%E5%88%87%E6%8D%A2/" rel="tag">数据源动态切换</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84/" rel="tag">数据结构</a><span class="tag-list-count">11</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%96%B0%E8%AF%AD%E8%A8%80/" rel="tag">新语言</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%97%85%E6%B8%B8/" rel="tag">旅游</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%97%A5%E5%BF%97/" rel="tag">日志</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%9B%BE%E5%8E%9D%E5%9E%B5/" rel="tag">曾厝垵</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%9C%80%E5%B0%8F%E6%A0%88/" rel="tag">最小栈</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%9D%80%E4%BA%BA%E8%AF%9B%E5%BF%83/" rel="tag">杀人诛心</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%9D%AD%E5%B7%9E/" rel="tag">杭州</a><span class="tag-list-count">4</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%A0%87%E8%AE%B0%E6%95%B4%E7%90%86/" rel="tag">标记整理</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%A4%8D%E7%89%A9%E5%9B%AD/" rel="tag">植物园</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%B2%99%E8%8C%B6%E9%9D%A2/" rel="tag">沙茶面</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%B3%A8%E8%A7%A3/" rel="tag">注解</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%B5%B7%E8%9B%8E%E7%85%8E/" rel="tag">海蛎煎</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%B6%88%E6%81%AF%E9%98%9F%E5%88%97/" rel="tag">消息队列</a><span class="tag-list-count">9</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%B7%98%E6%B1%B0%E7%AD%96%E7%95%A5/" rel="tag">淘汰策略</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%BA%90%E7%A0%81/" rel="tag">源码</a><span class="tag-list-count">11</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E6%BA%90%E7%A0%81%E8%A7%A3%E6%9E%90/" rel="tag">源码解析</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E7%94%9F%E6%B4%BB/" rel="tag">生活</a><span class="tag-list-count">40</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E7%94%B5%E7%93%B6%E8%BD%A6/" rel="tag">电瓶车</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E7%96%AB%E6%83%85/" rel="tag">疫情</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E7%9C%8B%E4%B9%A6/" rel="tag">看书</a><span class="tag-list-count">1</span></li><li 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rel="tag">线程池</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E7%BC%93%E5%AD%98/" rel="tag">缓存</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E7%BC%93%E5%AD%98%E5%87%BB%E7%A9%BF/" rel="tag">缓存击穿</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E7%BC%93%E5%AD%98%E7%A9%BF%E9%80%8F/" rel="tag">缓存穿透</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E7%BC%93%E5%AD%98%E9%9B%AA%E5%B4%A9/" rel="tag">缓存雪崩</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E7%BC%96%E7%A0%81/" rel="tag">编码</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E7%BE%8E%E5%9B%BD/" rel="tag">美国</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E8%80%81%E7%94%B5%E8%84%91/" rel="tag">老电脑</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E8%87%AA%E5%8A%A8%E8%A3%85%E9%85%8D/" rel="tag">自动装配</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E8%87%AA%E6%97%8B/" rel="tag">自旋</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E8%87%AA%E9%80%82%E5%BA%94%E6%8B%93%E5%B1%95/" rel="tag">自适应拓展</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E8%A3%85%E7%94%B5%E8%84%91/" rel="tag">装电脑</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E8%A7%84%E5%88%99/" rel="tag">规则</a><span class="tag-list-count">4</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E8%A7%A3%E6%9E%90/" rel="tag">解析</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E8%AE%BE%E8%AE%A1%E6%A8%A1%E5%BC%8F/" rel="tag">设计模式</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E8%AF%BB%E4%B9%A6/" rel="tag">读书</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E8%AF%BB%E5%90%8E%E6%84%9F/" rel="tag">读后感</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E8%B4%9F%E8%BD%BD%E5%9D%87%E8%A1%A1/" rel="tag">负载均衡</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E8%B6%B3%E7%90%83/" rel="tag">足球</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/%E8%B7%91%E6%AD%A5/" rel="tag">跑步</a><span class="tag-list-count">6</span></li><li class="tag-list-item"><a class="tag-list-link" 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itemprop="post" itemscope itemtype="http://schema.org/CreativeWork"><meta itemprop="name" content="undefined | Nicksxs's Blog"><meta itemprop="description" content=""></span><header class="post-header"><h2 class="post-title" itemprop="name headline"><a href="/2022/11/20/powershell-%E5%88%9D%E4%BD%93%E9%AA%8C%E4%BA%8C/" class="post-title-link" itemprop="url">powershell 初体验二</a></h2><div class="post-meta-container"><div class="post-meta"><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-calendar"></i> </span><span class="post-meta-item-text">发表于</span> <time title="创建时间：2022-11-20 21:15:44 / 修改时间：21:16:13" itemprop="dateCreated datePublished" datetime="2022-11-20T21:15:44+08:00">2022-11-20</time> </span><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-folder"></i> </span><span class="post-meta-item-text">分类于</span> <span itemprop="about" itemscope itemtype="http://schema.org/Thing"><a href="/categories/%E8%AF%AD%E8%A8%80/" itemprop="url" rel="index"><span itemprop="name">语言</span></a> </span></span><span id="/2022/11/20/powershell-%E5%88%9D%E4%BD%93%E9%AA%8C%E4%BA%8C/" class="post-meta-item leancloud_visitors" data-flag-title="powershell 初体验二" title="阅读次数"><span class="post-meta-item-icon"><i class="far fa-eye"></i> </span><span class="post-meta-item-text">阅读次数：</span> <span class="leancloud-visitors-count"></span> </span><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-comment"></i> </span><span class="post-meta-item-text">Disqus：</span> <a title="disqus" href="/2022/11/20/powershell-%E5%88%9D%E4%BD%93%E9%AA%8C%E4%BA%8C/#disqus_thread" itemprop="discussionUrl"><span class="post-comments-count disqus-comment-count" data-disqus-identifier="2022/11/20/powershell-初体验二/" itemprop="commentCount"></span></a></span></div></div></header><div class="post-body" itemprop="articleBody"><p>powershell创建数组也很方便<br>可以这样</p><pre class="line-numbers language-powershell" data-language="powershell"><code class="language-powershell"><span class="token variable">$nums</span>=2<span class="token punctuation">,</span>0<span class="token punctuation">,</span>1<span class="token punctuation">,</span>2<span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre><p>顺便可以用下我们上次学到的<code>gettype()</code><br><img data-src="https://img.nicksxs.com/blog/ntNjZZ.png"></p><p>如果是想创建连续数字的数组还可以用这个方便的方法</p><pre class="line-numbers language-powershell" data-language="powershell"><code class="language-powershell"><span class="token variable">$nums</span>=1<span class="token punctuation">.</span><span class="token punctuation">.</span>5<span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre><p><img data-src="https://img.nicksxs.com/blog/0Em1Mb.png"><br>而且数组还可以存放各种类型的数据</p><pre class="line-numbers language-powershell" data-language="powershell"><code class="language-powershell"><span class="token variable">$array</span>=1<span class="token punctuation">,</span><span class="token string">"哈哈"</span><span class="token punctuation">,</span><span class="token punctuation">(</span><span class="token namespace">[System.Guid]</span>::NewGuid<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token punctuation">(</span><span class="token function">get-date</span><span class="token punctuation">)</span><span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre><p><img data-src="https://img.nicksxs.com/blog/ixU6Hp.png"><br>还有判断类型可以用<code>-is</code><br><img data-src="https://img.nicksxs.com/blog/eeWIP9.png"><br>创建一个空数组</p><pre class="line-numbers language-powershell" data-language="powershell"><code class="language-powershell"><span class="token variable">$array</span>=@<span class="token punctuation">(</span><span class="token punctuation">)</span><span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre><p><img data-src="https://img.nicksxs.com/blog/Bp9UAF.png"><br>数组添加元素</p><pre class="line-numbers language-powershell" data-language="powershell"><code class="language-powershell"><span class="token variable">$array</span><span class="token operator">+=</span><span class="token string">"a"</span><span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre><p><img data-src="https://img.nicksxs.com/blog/iaXGt5.png"><br>数组删除元素</p><pre class="line-numbers language-powershell" data-language="powershell"><code class="language-powershell"><span class="token variable">$a</span>=1<span class="token punctuation">.</span><span class="token punctuation">.</span>4
<span class="token variable">$a</span>=<span class="token variable">$a</span><span class="token punctuation">[</span>0<span class="token punctuation">.</span><span class="token punctuation">.</span>1<span class="token punctuation">]</span><span class="token operator">+</span><span class="token variable">$a</span><span class="token punctuation">[</span>3<span class="token punctuation">]</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span></span></code></pre><p><img data-src="https://img.nicksxs.com/blog/oUKE8A.png"></p></div><footer class="post-footer"><div class="post-eof"></div></footer></article></div><div class="post-block"><article itemscope itemtype="http://schema.org/Article" class="post-content"><link itemprop="mainEntityOfPage" href="https://nicksxs.me/2022/11/13/powershell-%E5%88%9D%E4%BD%93%E9%AA%8C/"><span hidden itemprop="author" itemscope itemtype="http://schema.org/Person"><meta itemprop="image" content="/uploads/avatar.jpg"><meta itemprop="name" content="Nicksxs"></span><span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization"><meta itemprop="name" content="Nicksxs's Blog"><meta itemprop="description" content="learn from zero,技术博客，Nicksxs，史学森"></span><span hidden itemprop="post" itemscope itemtype="http://schema.org/CreativeWork"><meta itemprop="name" content="undefined | Nicksxs's Blog"><meta itemprop="description" content=""></span><header class="post-header"><h2 class="post-title" itemprop="name headline"><a href="/2022/11/13/powershell-%E5%88%9D%E4%BD%93%E9%AA%8C/" class="post-title-link" itemprop="url">powershell 初体验</a></h2><div class="post-meta-container"><div class="post-meta"><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-calendar"></i> </span><span class="post-meta-item-text">发表于</span> <time title="创建时间：2022-11-13 21:30:53" itemprop="dateCreated datePublished" datetime="2022-11-13T21:30:53+08:00">2022-11-13</time> </span><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-folder"></i> </span><span class="post-meta-item-text">分类于</span> <span itemprop="about" itemscope itemtype="http://schema.org/Thing"><a href="/categories/%E8%AF%AD%E8%A8%80/" itemprop="url" rel="index"><span itemprop="name">语言</span></a> </span></span><span id="/2022/11/13/powershell-%E5%88%9D%E4%BD%93%E9%AA%8C/" class="post-meta-item leancloud_visitors" data-flag-title="powershell 初体验" title="阅读次数"><span class="post-meta-item-icon"><i class="far fa-eye"></i> </span><span class="post-meta-item-text">阅读次数：</span> <span class="leancloud-visitors-count"></span> </span><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-comment"></i> </span><span class="post-meta-item-text">Disqus：</span> <a title="disqus" href="/2022/11/13/powershell-%E5%88%9D%E4%BD%93%E9%AA%8C/#disqus_thread" itemprop="discussionUrl"><span class="post-comments-count disqus-comment-count" data-disqus-identifier="2022/11/13/powershell-初体验/" itemprop="commentCount"></span></a></span></div></div></header><div class="post-body" itemprop="articleBody"><h3 id="powershell变量"><a href="#powershell变量" class="headerlink" title="powershell变量"></a>powershell变量</h3><p>变量命名类似于php</p><pre class="line-numbers language-powershell" data-language="powershell"><code class="language-powershell"><span class="token function">PS</span> C:\Users\Nicks> <span class="token variable">$a</span>=1
<span class="token function">PS</span> C:\Users\Nicks> <span class="token variable">$b</span>=2
<span class="token function">PS</span> C:\Users\Nicks> <span class="token variable">$a</span><span class="token operator">*</span><span class="token variable">$b</span>
2<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span></span></code></pre><p>有一个比较好用的是变量交换<br>一般的语言做两个变量交换一般需要一个临时变量</p><pre class="line-numbers language-bash" data-language="bash"><code class="language-bash"><span class="token variable">$tmp</span><span class="token operator">=</span><span class="token variable">$a</span>
<span class="token variable">$a</span><span class="token operator">=</span><span class="token variable">$b</span>
<span class="token variable">$b</span><span class="token operator">=</span><span class="token variable">$tmp</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span></span></code></pre><p>而在powershell中可以这样</p><pre class="line-numbers language-powershell" data-language="powershell"><code class="language-powershell"><span class="token variable">$a</span><span class="token punctuation">,</span><span class="token variable">$b</span>=<span class="token variable">$b</span><span class="token punctuation">,</span><span class="token variable">$a</span>
<span class="token function">PS</span> C:\Users\Nicks> <span class="token variable">$a</span><span class="token punctuation">,</span><span class="token variable">$b</span>=<span class="token variable">$b</span><span class="token punctuation">,</span><span class="token variable">$a</span>
<span class="token function">PS</span> C:\Users\Nicks> <span class="token variable">$a</span>
2
<span class="token function">PS</span> C:\Users\Nicks> <span class="token variable">$b</span>
1<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>还可以通过这个</p><pre class="line-numbers language-powershell" data-language="powershell"><code class="language-powershell"><span class="token function">PS</span> C:\Users\Nicks> <span class="token function">ls</span> variable:
Name Value
<span class="token operator">--</span><span class="token operator">--</span> <span class="token operator">--</span><span class="token operator">--</span><span class="token operator">-</span>
$ <span class="token variable">$b</span>
? True
^ <span class="token variable">$b</span>
a 2
args <span class="token punctuation">&#123;</span><span class="token punctuation">&#125;</span>
b 1<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>查看现存的变量<br>当然一般脚本都是动态类型的，<br>可以通过<br>gettype方法<br><img data-src="https://img.nicksxs.com/blog/rGDt0n.png"></p></div><footer class="post-footer"><div class="post-eof"></div></footer></article></div><div class="post-block"><article itemscope itemtype="http://schema.org/Article" class="post-content"><link itemprop="mainEntityOfPage" href="https://nicksxs.me/2022/11/06/%E8%81%8A%E4%B8%80%E4%B8%8B%E5%85%B3%E4%BA%8E%E6%80%8E%E4%B9%88%E9%99%AA%E4%BC%B4%E5%AD%A6%E4%B9%A0/"><span hidden itemprop="author" itemscope itemtype="http://schema.org/Person"><meta itemprop="image" content="/uploads/avatar.jpg"><meta itemprop="name" content="Nicksxs"></span><span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization"><meta itemprop="name" content="Nicksxs's Blog"><meta itemprop="description" content="learn from zero,技术博客，Nicksxs，史学森"></span><span hidden itemprop="post" itemscope itemtype="http://schema.org/CreativeWork"><meta itemprop="name" content="undefined | Nicksxs's Blog"><meta itemprop="description" content=""></span><header class="post-header"><h2 class="post-title" itemprop="name headline"><a href="/2022/11/06/%E8%81%8A%E4%B8%80%E4%B8%8B%E5%85%B3%E4%BA%8E%E6%80%8E%E4%B9%88%E9%99%AA%E4%BC%B4%E5%AD%A6%E4%B9%A0/" class="post-title-link" itemprop="url">聊一下关于怎么陪伴学习</a></h2><div class="post-meta-container"><div class="post-meta"><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-calendar"></i> </span><span class="post-meta-item-text">发表于</span> <time title="创建时间：2022-11-06 21:55:54 / 修改时间：21:56:38" itemprop="dateCreated datePublished" datetime="2022-11-06T21:55:54+08:00">2022-11-06</time> </span><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-folder"></i> </span><span class="post-meta-item-text">分类于</span> <span itemprop="about" itemscope itemtype="http://schema.org/Thing"><a href="/categories/%E7%94%9F%E6%B4%BB/" itemprop="url" rel="index"><span itemprop="name">生活</span></a> </span></span><span id="/2022/11/06/%E8%81%8A%E4%B8%80%E4%B8%8B%E5%85%B3%E4%BA%8E%E6%80%8E%E4%B9%88%E9%99%AA%E4%BC%B4%E5%AD%A6%E4%B9%A0/" class="post-meta-item leancloud_visitors" data-flag-title="聊一下关于怎么陪伴学习" title="阅读次数"><span class="post-meta-item-icon"><i class="far fa-eye"></i> </span><span class="post-meta-item-text">阅读次数：</span> <span class="leancloud-visitors-count"></span> </span><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-comment"></i> </span><span class="post-meta-item-text">Disqus：</span> <a title="disqus" href="/2022/11/06/%E8%81%8A%E4%B8%80%E4%B8%8B%E5%85%B3%E4%BA%8E%E6%80%8E%E4%B9%88%E9%99%AA%E4%BC%B4%E5%AD%A6%E4%B9%A0/#disqus_thread" itemprop="discussionUrl"><span class="post-comments-count disqus-comment-count" data-disqus-identifier="2022/11/06/聊一下关于怎么陪伴学习/" itemprop="commentCount"></span></a></span></div></div></header><div class="post-body" itemprop="articleBody"><p>这是一次开车过程中结合网上的一些微博想到的，开车是之前LD买了车后，陪领导练车，其实在一开始练车的时候，我们已经是找了相对很空的封闭路段，路上基本很少有车，偶尔有一辆车，但是LD还是很害怕，车速还只有十几的时候，还很远的对面来车的时候就觉得很慌了，这个时候如果以常理肯定会说这样子完全不用怕，如果克服恐惧真的这么容易的话，问题就不会那么纠结了，人生是很难完全感同身受的，唯有降低预设的基准让事情从头理清楚，害怕了我们就先休息，有车了我们就停下，先适应完全没车的情况，变得更慢一点，如果这时候着急一点，反而会起到反效果，比如只是说不要怕，接着开，甚至有点厌烦了，那基本这个练车也不太成得了了，而正好是有耐心的一起慢慢练习，还有就是第二件是切身体会，就是当道路本来是两条道，但是封了一条的时候，这时候开车如果是像我这样的新手，如果开车时左右边看着的话，车肯定开不好，因为那样会一直左右调整，反而更容易控制不好左右的距离，蹭到旁边的隔离栏，正确的方式应该是专注于正前方的路，这样才能保证左右边距离尽可能均匀，而不是顾左失右或者顾右失左，所以很多陪伴学习需要注意的是方式和耐心，能够识别到关键点那是最好的，但是有时候更需要的是耐心，纯靠耐心不一定能解决问题，但是可能会找到问题关键点。</p></div><footer class="post-footer"><div class="post-eof"></div></footer></article></div><div class="post-block"><article itemscope itemtype="http://schema.org/Article" class="post-content"><link itemprop="mainEntityOfPage" href="https://nicksxs.me/2022/10/30/%E8%AE%B0%E5%BD%95%E4%B8%8B-redis-%E7%9A%84%E4%B8%80%E4%BA%9B%E4%BD%BF%E7%94%A8%E6%96%B9%E6%B3%95/"><span hidden itemprop="author" itemscope itemtype="http://schema.org/Person"><meta itemprop="image" content="/uploads/avatar.jpg"><meta itemprop="name" content="Nicksxs"></span><span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization"><meta itemprop="name" content="Nicksxs's Blog"><meta itemprop="description" content="learn from zero,技术博客，Nicksxs，史学森"></span><span hidden itemprop="post" itemscope itemtype="http://schema.org/CreativeWork"><meta itemprop="name" content="undefined | Nicksxs's Blog"><meta itemprop="description" content=""></span><header class="post-header"><h2 class="post-title" itemprop="name headline"><a href="/2022/10/30/%E8%AE%B0%E5%BD%95%E4%B8%8B-redis-%E7%9A%84%E4%B8%80%E4%BA%9B%E4%BD%BF%E7%94%A8%E6%96%B9%E6%B3%95/" class="post-title-link" itemprop="url">记录下 redis 的一些使用方法</a></h2><div class="post-meta-container"><div class="post-meta"><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-calendar"></i> </span><span class="post-meta-item-text">发表于</span> <time title="创建时间：2022-10-30 21:17:41" itemprop="dateCreated datePublished" datetime="2022-10-30T21:17:41+08:00">2022-10-30</time> </span><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-calendar-check"></i> </span><span class="post-meta-item-text">更新于</span> <time title="修改时间：2022-10-31 20:23:52" itemprop="dateModified" datetime="2022-10-31T20:23:52+08:00">2022-10-31</time> </span><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-folder"></i> </span><span class="post-meta-item-text">分类于</span> <span itemprop="about" itemscope itemtype="http://schema.org/Thing"><a href="/categories/redis/" itemprop="url" rel="index"><span itemprop="name">redis</span></a> </span></span><span id="/2022/10/30/%E8%AE%B0%E5%BD%95%E4%B8%8B-redis-%E7%9A%84%E4%B8%80%E4%BA%9B%E4%BD%BF%E7%94%A8%E6%96%B9%E6%B3%95/" class="post-meta-item leancloud_visitors" data-flag-title="记录下 redis 的一些使用方法" title="阅读次数"><span class="post-meta-item-icon"><i class="far fa-eye"></i> </span><span class="post-meta-item-text">阅读次数：</span> <span class="leancloud-visitors-count"></span> </span><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-comment"></i> </span><span class="post-meta-item-text">Disqus：</span> <a title="disqus" href="/2022/10/30/%E8%AE%B0%E5%BD%95%E4%B8%8B-redis-%E7%9A%84%E4%B8%80%E4%BA%9B%E4%BD%BF%E7%94%A8%E6%96%B9%E6%B3%95/#disqus_thread" itemprop="discussionUrl"><span class="post-comments-count disqus-comment-count" data-disqus-identifier="2022/10/30/记录下-redis-的一些使用方法/" itemprop="commentCount"></span></a></span></div></div></header><div class="post-body" itemprop="articleBody"><p>虽然说之前讲解过一些redis源码相关的，但是说实话，redis的各种使用其实有时候有点生疏，或者在一些特定的使用场景中，一些使用方法还是需要学习和记录的</p><h3 id="获取所有数据"><a href="#获取所有数据" class="headerlink" title="获取所有数据"></a>获取所有数据</h3><p>获取<code>list</code>类型的所有元素，可以使用 <a target="_blank" rel="noopener" href="https://redis.io/commands/lrange/">lrange</a> , 直接用<code>lrange key 0 -1</code><br>比如<br><img data-src="https://img.nicksxs.com/uPic/WechatIMG1082.png"><br>这里有一些方便的就是可以不用知道长度，直接全返回，或者如果想拿到特定区间的就可以直接指定起止范围，<br><img data-src="https://img.nicksxs.com/blog/YRpfWA.png"><br>这样就不用一个个<code>pop</code>出来</p><h3 id="裁剪list"><a href="#裁剪list" class="headerlink" title="裁剪list"></a>裁剪list</h3><p>前面用了<code>lrange</code>取得了一个范围的数据，如果想将数据直接移除，那可以用 <a target="_blank" rel="noopener" href="https://redis.io/commands/ltrim/">ltrim</a> ,<br><img data-src="https://img.nicksxs.com/blog/0607zR.png"><br>这两个命令就可以从<code>list</code>里取出批量数据，并且能从<code>list</code>里删除这部分数据</p></div><footer class="post-footer"><div class="post-eof"></div></footer></article></div><div class="post-block"><article itemscope itemtype="http://schema.org/Article" class="post-content"><link itemprop="mainEntityOfPage" href="https://nicksxs.me/2022/10/23/%E8%AE%B0%E5%BD%95%E4%B8%8B-phpunit-%E7%9A%84%E5%85%A5%E9%97%A8%E4%BD%BF%E7%94%A8%E6%96%B9%E6%B3%95%E4%B9%8BsetUp%E5%92%8CtearDown/"><span hidden itemprop="author" itemscope itemtype="http://schema.org/Person"><meta itemprop="image" content="/uploads/avatar.jpg"><meta itemprop="name" content="Nicksxs"></span><span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization"><meta itemprop="name" content="Nicksxs's Blog"><meta itemprop="description" content="learn from zero,技术博客，Nicksxs，史学森"></span><span hidden itemprop="post" itemscope itemtype="http://schema.org/CreativeWork"><meta itemprop="name" content="undefined | Nicksxs's Blog"><meta itemprop="description" content=""></span><header class="post-header"><h2 class="post-title" itemprop="name headline"><a href="/2022/10/23/%E8%AE%B0%E5%BD%95%E4%B8%8B-phpunit-%E7%9A%84%E5%85%A5%E9%97%A8%E4%BD%BF%E7%94%A8%E6%96%B9%E6%B3%95%E4%B9%8BsetUp%E5%92%8CtearDown/" class="post-title-link" itemprop="url">记录下 phpunit 的入门使用方法之setUp和tearDown</a></h2><div class="post-meta-container"><div class="post-meta"><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-calendar"></i> </span><span class="post-meta-item-text">发表于</span> <time title="创建时间：2022-10-23 19:44:53 / 修改时间：19:46:10" itemprop="dateCreated datePublished" datetime="2022-10-23T19:44:53+08:00">2022-10-23</time> </span><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-folder"></i> </span><span class="post-meta-item-text">分类于</span> <span itemprop="about" itemscope itemtype="http://schema.org/Thing"><a href="/categories/php/" itemprop="url" rel="index"><span itemprop="name">php</span></a> </span></span><span id="/2022/10/23/%E8%AE%B0%E5%BD%95%E4%B8%8B-phpunit-%E7%9A%84%E5%85%A5%E9%97%A8%E4%BD%BF%E7%94%A8%E6%96%B9%E6%B3%95%E4%B9%8BsetUp%E5%92%8CtearDown/" class="post-meta-item leancloud_visitors" data-flag-title="记录下 phpunit 的入门使用方法之setUp和tearDown" title="阅读次数"><span class="post-meta-item-icon"><i class="far fa-eye"></i> </span><span class="post-meta-item-text">阅读次数：</span> <span class="leancloud-visitors-count"></span> </span><span class="post-meta-item"><span class="post-meta-item-icon"><i class="far fa-comment"></i> </span><span class="post-meta-item-text">Disqus：</span> <a title="disqus" href="/2022/10/23/%E8%AE%B0%E5%BD%95%E4%B8%8B-phpunit-%E7%9A%84%E5%85%A5%E9%97%A8%E4%BD%BF%E7%94%A8%E6%96%B9%E6%B3%95%E4%B9%8BsetUp%E5%92%8CtearDown/#disqus_thread" itemprop="discussionUrl"><span class="post-comments-count disqus-comment-count" data-disqus-identifier="2022/10/23/记录下-phpunit-的入门使用方法之setUp和tearDown/" itemprop="commentCount"></span></a></span></div></div></header><div class="post-body" itemprop="articleBody"><p>可能是太久没写单测了，写个单测发现不符合预期，后来验证下才反应过来<br>我们来看下demo</p><pre class="line-numbers language-php" data-language="php"><code class="language-php"><span class="token keyword">class</span> <span class="token class-name-definition class-name">RenameTest</span> <span class="token keyword">extends</span> <span class="token class-name">TestCase</span>
<span class="token punctuation">&#123;</span>
<span class="token keyword">public</span> <span class="token keyword">function</span> <span class="token function-definition function">setUp</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">:</span> <span class="token keyword return-type">void</span>
<span class="token punctuation">&#123;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"setUp"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span>
<span class="token keyword">public</span> <span class="token keyword">function</span> <span class="token function-definition function">test1</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token punctuation">&#123;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"test1"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">assertEquals</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span>
<span class="token keyword">public</span> <span class="token keyword">function</span> <span class="token function-definition function">test2</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token punctuation">&#123;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"test2"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">assertEquals</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span>
<span class="token keyword">protected</span> <span class="token keyword">function</span> <span class="token function-definition function">tearDown</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">:</span> <span class="token keyword return-type">void</span>
<span class="token punctuation">&#123;</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"tearDown"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">&#125;</span>
<span class="token punctuation">&#125;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>因为我是想写个重命名的小工具，希望通过<code>setUp</code>和<code>tearDown</code>做一些文件初始化和清理工作，但是我把两个case的初始化跟清理工作写到了单个<code>setUp</code>和<code>tearDown</code>中，这样就出现了异常的错误<br>通过上面的示例代码，可以看到执行结果</p><pre class="line-numbers language-bash" data-language="bash"><code class="language-bash">❯ vendor/bin/phpunit
PHPUnit <span class="token number">9.5</span>.25 by Sebastian Bergmann and contributors.
.string<span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">)</span> <span class="token string">"setUp"</span>
string<span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">)</span> <span class="token string">"test1"</span>
string<span class="token punctuation">(</span><span class="token number">8</span><span class="token punctuation">)</span> <span class="token string">"tearDown"</span>
<span class="token builtin class-name">.</span> <span class="token number">2</span> / <span class="token number">2</span> <span class="token punctuation">(</span><span class="token number">100</span>%<span class="token punctuation">)</span>string<span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">)</span> <span class="token string">"setUp"</span>
string<span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">)</span> <span class="token string">"test2"</span>
string<span class="token punctuation">(</span><span class="token number">8</span><span class="token punctuation">)</span> <span class="token string">"tearDown"</span>
Time: 00:00.005, Memory: <span class="token number">6.00</span> MB
OK <span class="token punctuation">(</span><span class="token number">2</span> tests, <span class="token number">2</span> assertions<span class="token punctuation">)</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>其实就是很简单的会在每个test方法前后都执行<code>setUp</code>和<code>tearDown</code></p></div><footer class="post-footer"><div class="post-eof"></div></footer></article></div><nav class="pagination"><span class="page-number current">1</span><a class="page-number" href="/page/2/">2</a><span class="space">&hellip;</span><a class="page-number" href="/page/38/">38</a><a class="extend next" rel="next" href="/page/2/"><i class="fa fa-angle-right" aria-label="下一页"></i></a></nav></div></main><footer class="footer"><div class="footer-inner"><div class="beian"><a href="https://beian.miit.gov.cn/" rel="noopener" target="_blank">浙ICP备16002580号-2 </a><img src="/uploads/beian.png" alt=""><a href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=33010602011094" rel="noopener" target="_blank">浙公网安备 33010602011094号</a></div><div class="copyright">&copy; <span itemprop="copyrightYear">2022</span> <span class="with-love"><i class="fa fa-heart"></i> </span><span class="author" itemprop="copyrightHolder">Nicksxs</span></div><div class="busuanzi-count"><span class="post-meta-item" id="busuanzi_container_site_uv"><span class="post-meta-item-icon"><i class="fa fa-user"></i> </span><span class="site-uv" title="总访客量"><span id="busuanzi_value_site_uv"></span> </span></span><span class="post-meta-item" id="busuanzi_container_site_pv"><span class="post-meta-item-icon"><i class="fa fa-eye"></i> </span><span class="site-pv" title="总访问量"><span id="busuanzi_value_site_pv"></span></span></span></div></div></footer><script src="https://cdnjs.cloudflare.com/ajax/libs/animejs/3.2.1/anime.min.js" integrity="sha256-XL2inqUJaslATFnHdJOi9GfQ60on8Wx1C2H8DYiN1xY=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js" integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/fancybox/3.5.7/jquery.fancybox.min.js" integrity="sha256-yt2kYMy0w8AbtF89WXb2P1rfjcP/HTHLT7097U8Y5b8=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/lozad.js/1.16.0/lozad.min.js" integrity="sha256-mOFREFhqmHeQbXpK2lp4nA3qooVgACfh88fpJftLBbc=" crossorigin="anonymous"></script><script src="/js/comments.js"></script><script src="/js/utils.js"></script><script src="/js/next-boot.js"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/hexo-generator-searchdb/1.4.0/search.js" integrity="sha256-vXZMYLEqsROAXkEw93GGIvaB2ab+QW6w3+1ahD9nXXA=" crossorigin="anonymous"></script><script src="/js/third-party/search/local-search.js"></script><script src="/js/third-party/fancybox.js"></script><script async src="https://busuanzi.ibruce.info/busuanzi/2.3/busuanzi.pure.mini.js"></script><script class="next-config" data-name="leancloud_visitors" type="application/json">{"enable":true,"app_id":"ysza182Vghlqjdt7QiwGLLJy-gzGzoHsz","app_key":"s9GDqbn7gnGGkusf66YRVccw","server_url":"https://leancloud.cn","security":true}</script><script src="/js/third-party/statistics/lean-analytics.js"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/quicklink/2.2.0/quicklink.umd.js" integrity="sha256-4kQf9z5ntdQrzsBC3YSHnEz02Z9C1UeW/E9OgnvlzSY=" crossorigin="anonymous"></script><script class="next-config" data-name="quicklink" type="application/json">{"enable":false,"home":false,"archive":false,"delay":true,"timeout":3000,"priority":true,"url":"https://nicksxs.me/"}</script><script src="/js/third-party/quicklink.js"></script><script class="next-config" data-name="disqus" type="application/json">{"enable":true,"shortname":"nicksxs","count":true,"i18n":{"disqus":"disqus"}}</script><script src="/js/third-party/comments/disqus.js"></script></body></html>