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grepping using the “|” alternative operator

...overflow.com/a/6775943/3933332 doesn't have? – Rizier123 Mar 1 '15 at 5:35 3 @Rizier123 -- look a...
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How to call a stored procedure from Java and JPA

...prepareCall("{call getEmployeeDetails(?, ?)}"); cstmt.setInt("employeeId", 123); cstmt.setInt("companyId", 456); ResultSet rs = cstmt.executeQuery(); Reference JDBC documentation: Java SE 6 share | ...
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How do you convert Html to plain text?

...e plain text look painful. Do you know how to fix? – 123iamking Jun 7 '16 at 7:24 ...
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What is the parameter “next” used for in Express?

...) { // check for and maybe do something with req.user }); Since /users/123 will match the route in your example first, that will first check and find user 123; then /users can do something with the result of that. Route middleware is a more flexible and powerful tool, though, in my opinion, sin...
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MongoDB副本集详解 优于以往的主从模式 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

... 他的选举过程大致如下: ? 得到每个服务器节点的最后操作时间戳。每个mongodb都有oplog机制会记录本机的操作,方便和主服务器进行对比数据是否同步还可以用于错误恢复。 ? 如果集群中大部分服务器down机了,保留活着的节...
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What does %~dp0 mean, and how does it work?

...~dp1= D:\Workbench\ ~dp2= D:\Workbench\ Run 2: D:\Workbench>batch c:\123\a.exe e:\abc\b.exe ~dp0= D:\Workbench\ ~dp1= c:\123\ ~dp2= e:\abc\ share | improve this answer | ...
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Load “Vanilla” Javascript Libraries into Node.js

... David WoleverDavid Wolever 123k7676 gold badges297297 silver badges462462 bronze badges ...
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进程间通信(IPC)的几种方式 - C/C++ - 清泛网 - 专注C/C++及内核技术

...言是不能互相访问的,唯一的例外是共享内存区。但是,系统空间却是“公共场所”,所以内核显然可以提供这样的条件。除此以外,那就是双方都可以访问的外设了。在这个意义上,两个进程当然也可以通过磁盘上的普通文件...
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C++虚析构函数解析 - C/C++ - 清泛网 - 专注C/C++及内核技术

...什么基类的析构函数是虚函数?在实现多态时,当用基类操作派生类,在析构时防止只析构基类而不析构派生类的状况发生。以下内容转自:http...为什么基类的析构函数是虚函数? 在实现多态时,当用基类操作派生类,在析构...
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程序崩溃时malloc/new可能导致死锁,程序卡死退不出 - C/C++ - 清泛网 - 专...

...死锁概率低一些,死锁感觉是由于malloc不可重入导致的。操作系统底层API行为可能不一致,可能有办法指定 1、程序崩溃时malloc/new可能导致死锁,程序卡死退不出。Win、Linux下都会发生,应该是malloc系统函数的不可重入性导致...