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Coding Practices which enable the compiler/optimizer to make a faster program

... Write to local variables and not output arguments! This can be a huge help for getting around aliasing slowdowns. For example, if your code looks like void DoSomething(const Foo& foo1, const Foo* foo2, int numFoo, Foo& barOut) { for (int...
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What are the mathematical/computational principles behind this game?

...t (this is a bit different from Euclid). Now, add "finite" into the soup and you have the question: Can we have a geometry with just 2 points? With 3 points? With 4? With 7? There are still open questions regarding this problem but we do know this: If there are geometries with Q points, then Q...
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Difference between wait() and sleep()

What is the difference between a wait() and sleep() in Threads? 33 Answers 33 ...
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Why does Python use 'magic methods'?

I've been playing around with Python recently, and one thing I'm finding a bit odd is the extensive use of 'magic methods', e.g. to make its length available, an object implements a method, def __len__(self) , and then it is called when you write len(obj) . ...
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How do I get whole and fractional parts from double in JSP/Java?

How do I get whole and fractional parts from double in JSP/Java ? If the value is 3.25 then I want to get fractional =.25 , whole = 3 ...
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HTTP Error 503. The service is unavailable. App pool stops on accessing website

There are number of posts on this and I have tried many a things by now. But to no avail. Myself a Winforms Developer basically, started working on this Web stuff few days back as my company is taking Web initiatives. ...
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Difference between 'struct' and 'typedef struct' in C++?

... It's a holdover from C, in which it makes a difference. The C language standard (C89 §3.1.2.3, C99 §6.2.3, and C11 §6.2.3) mandates separate namespaces for different categories of identifiers, including tag identifiers (for struct/union/enum) and ordinary identifiers (for typedef and other iden...
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How can I find unused images and CSS styles in a website? [closed]

Is there a method (other than trial and error) I can use to find unused image files? How about CSS declarations for ID's and Classes that don't even exist in the site? ...
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Multi-statement Table Valued Function vs Inline Table Valued Function

...a difference in performance between an inline table valued function (ITVF) and a multi-statement table valued function (MSTVF) even if they both simply execute a SELECT statement. SQL Server will treat an ITVF somewhat like a VIEW in that it will calculate an execution plan using the latest statisti...
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Is duplicated code more tolerable in unit tests?

I ruined several unit tests some time ago when I went through and refactored them to make them more DRY --the intent of each test was no longer clear. It seems there is a trade-off between tests' readability and maintainability. If I leave duplicated code in unit tests, they're more readable, but...