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OceanBase使用libeasy原理源码分析:服务器端 - 数据库(内核) - 泛网 - ...

OceanBase使用libeasy原理源码分析:服务器端libeasy是个网络框架,这个网络框架基于事件驱动模型,libeasy可以有多个网络I O线程,每个网络I O线程一个event loop,事件驱动模型基于开源的libev实现。我认为,libeasy不同于 libeasy是个...
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Fastest way to convert string to integer in PHP

Using PHP, what's the fastest way to convert a string like this: "123" to an integer? 8 Answers ...
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What exactly is Type Coercion in Javascript?

...tically (on-the-fly) converts a variable from one datatype to another Ex: 123 + "4" generally raises an error but in Javascript due to type coercion, it results in 1234 a string if(23 == "23"){ console.log(" this line is inside the loop and is executed "); } In the above code, because of typ...
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Simple Pivot Table to Count Unique Values

...s two different columns. Using the original example, I didn't have: ABC 123 ABC 123 ABC 123 DEF 456 DEF 567 DEF 456 DEF 456 and want it to appear as: ABC 1 DEF 2 But something more like: ABC 123 ABC 123 ABC 123 ABC 456 DEF 123 DEF 456 D...
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Difference between matches() and find() in Java Regex

... Pattern p = Pattern.compile("\\d\\d\\d"); Matcher m = p.matcher("a123b"); System.out.println(m.find()); System.out.println(m.matches()); p = Pattern.compile("^\\d\\d\\d$"); m = p.matcher("123"); System.out.println(m.find()); System.out.println(m.matches()); } /* ou...
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REDHAT 6.4 X64下ORACLE 11GR2静默安装 - 数据库(内核) - 泛网 - 专注C/C++及内核技术

REDHAT 6.4 X64下ORACLE 11GR2静默安装前言在某些情况下,我们不具备桌面条件,只能在命令行窗口下安装oracle第一REDHAT6.4安装1.2虚拟机安装REDHAT名称随便自己起我没有外部存储...前言 在某些情况下,我们不具备桌面条件,只能在命...
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推广期间,技术问题解决、技术调查免费啦! - 免费信息发布 - 清泛IT社区,...

...册用户将获得两次免费的问题解决或技术调查机会,将由泛网组织专人在线解决问题、完成技术调查。 要求:问题或需求描述清晰,可随时在线沟通。 范围:技术调查工作量须控制在2人日(人日:一个专人一日的工作量...
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推荐一个程序员IT技术专业网站,干货不少 - 免费信息发布 - 清泛IT社区,为...

泛网致力于打造中国领先的一站式IT信息服务平台,全面覆盖热点资讯、论坛博客、社区服务等,精准搜索并深度挖掘有价值的IT数据,同时为每一个IT人提供一个快乐、自由的学习交流平台。 我们的优势: 清晰、求实,我...
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How can I parse a string with a comma thousand separator to a number?

...1), '.'); return parseFloat(normalized); } const corpus = { '1.123': { expected: 1.123, locale: 'en-US' }, '1,123': { expected: 1123, locale: 'en-US' }, '2.123': { expected: 2123, locale: 'fr-FR' }, '2,123': { expected: 2.123, loc...
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Javascript : natural sort of alphanumerical strings

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