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FileSystemWatcher Changed event is raised twice

...anner. Because FileSystemWatcher monitors the operating system activities, all events that these applications fire will be picked up. Now this bit of text is about the Created event, but the same thing applies to other file events as well. In some applications you might be able to get around this ...
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What column type/length should I use for storing a Bcrypt hashed password in a Database?

... I don't get the reason why I should bother about binary or not binary at all, if I don't want to sort by password hash, compare hashes on database layer or make the password column unique (“Sorry, this password is already in use”) at all. I'd recommend using UTF8 everywhere. In that case there...
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How to get Scala List from Java List?

...now built into the language using: import scala.collection.JavaConversions._ ... lst.toList.foreach{ node => .... } works. asScala did not work In 2.12.x use import scala.collection.JavaConverters._ In 2.13.x use import scala.jdk.CollectionConverters._ ...
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C++ convert hex string to signed integer

...>> x; // output it as a signed type std::cout << static_cast<int>(x) << std::endl; } In the new C++11 standard, there are a few new utility functions which you can make use of! specifically, there is a family of "string to number" functions (http://en.cppreference.c...
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Servlet for serving static content

...;url-pattern>/</url-pattern> </servlet-mapping> This basically just maps all content files by extension to the default servlet, and everything else to "myAppServlet". It works in both Jetty and Tomcat. s...
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How to access component methods from “outside” in ReactJS?

... class Parent extends React.Class { constructor(props) { this._child = React.createRef(); } componentDidMount() { console.log(this._child.current.someMethod()); // Prints 'bar' } render() { return ( <div> <Child ref=...
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glob exclude pattern

... Really interesting solution! But my case is going to be extremely slow to make a read twice. Also if the content of a folder is big on an network directory, is going to be slow again. But in any case, really handy. ...
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Entity Framework DateTime and UTC

...y Framework (I am using the Code First Approach with CTP5 currently) store all DateTime values as UTC in the database? 13 A...
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ZeroMQ的学习和研究(PHP代码实例) - C/C++ - 清泛网 - 专注C/C++及内核技术

...型,分别是“Request-Reply “,”Publisher-Subscriber“,”Parallel Pipeline”,我们从这三种模式一窥 ZMQ 的究竟 ZMQ 的 hello world! 由 Client 发起请求,并等待 Server 回应请求。请求端发送一个简单的 hello,服务端则回应一个 world。请求端...
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What's the scope of a variable initialized in an if statement?

...ked only at runtime -- that is, when you get to the print x statement. If __name__ didn't equal "__main__" then you would get an exception: NameError: name 'x' is not defined. share | improve this ...