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Performance optimization strategies of last resort [closed]

There are plenty of performance questions on this site already, but it occurs to me that almost all are very problem-specific and fairly narrow. And almost all repeat the advice to avoid premature optimization. ...
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How to create a new database after initally installing oracle database 11g Express Edition?

I have installed Oracle Database 11g Express Edition on my pc (windows 7) and I have installed Oracle SQL Developer as well. ...
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How to design a multi-user ajax web application to be concurrently safe

I have a web page that shows a large amount of data from the server. The communication is done via ajax. 8 Answers ...
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How does this giant regex work?

I recently found the code below in one of my directories, in a file called doc.php . The file functions or links to a file manager. It's quite nicely done. Basically, it lists all the files in the current directory, and it lets you change directories. ...
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Case objects vs Enumerations in Scala

Are there any best-practice guidelines on when to use case classes (or case objects) vs extending Enumeration in Scala? 1...
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What's the best way of scraping data from a website? [closed]

I need to extract contents from a website, but the application doesn’t provide any application programming interface or another mechanism to access that data programmatically. ...
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MVVM in WPF - How to alert ViewModel of changes in Model… or should I?

I am going through some MVVM articles, primarily this and this . 11 Answers 11 ...
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Why do people say there is modulo bias when using a random number generator?

I have seen this question asked a lot but never seen a true concrete answer to it. So I am going to post one here which will hopefully help people understand why exactly there is "modulo bias" when using a random number generator, like rand() in C++. ...
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Java inner class and static nested class

What is the main difference between an inner class and a static nested class in Java? Does design / implementation play a role in choosing one of these? ...
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How to explain callbacks in plain english? How are they different from calling one function from ano

How to explain callbacks in plain English? How are they different from calling one function from another function taking some context from the calling function? How can their power be explained to a novice programmer? ...