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How do SO_REUSEADDR and SO_REUSEPORT differ?

The man pages and programmer documentations for the socket options SO_REUSEADDR and SO_REUSEPORT are different for different operating systems and often highly confusing. Some operating systems don't even have the option SO_REUSEPORT . The WEB is full of contradicting information regarding th...
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“using namespace” in c++ headers

... and how should we streamline the template functions--which are supposed to be in the headers? typedefs? – Chris Mar 11 '18 at 11:43 ...
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Is it possible to print a variable's type in standard C++?

... update to a very old question: Print variable type in C++. The accepted (and good) answer is to use typeid(a).name(), where a is a variable name. Now in C++11 we have decltype(x), which can turn an expression into a type. And decltype() comes with its own set of very interesting rules. For exam...
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How do you determine the ideal buffer size when using FileInputStream?

I have a method that creates a MessageDigest (a hash) from a file, and I need to do this to a lot of files (>= 100,000). How big should I make the buffer used to read from the files to maximize performance? ...
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How does the HyperLogLog algorithm work?

I've been learning about different algorithms in my spare time recently, and one that I came across which appears to be very interesting is called the HyperLogLog algorithm - which estimates how many unique items are in a list. ...
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LINQ - Convert List to Dictionary with Value as List

... It sounds like you want to group the MyObject instances by KeyedProperty and put that grouping into a Dictionary<long,List<MyObject>>. If so then try the following List<MyObject> list = ...; var map = list .GroupBy(x => x.KeyedProperty) .ToDictionary(x => x.Key, x =&g...
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CSS transition effect makes image blurry / moves image 1px, in Chrome?

...ecially the image-rendering CSS property. For best practice accessibility and SEO wise you could replace the background image with an <img> tag using object-fit CSS property. Original answer Try this in your CSS: .your-class-name { /* ... */ -webkit-backface-visibility: hidden; ...
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How do I specify the Linq OrderBy argument dynamically?

...he method 'System.Object GetValue(System.Object, System.Object[])' method, and this method cannot be translated into a store expression. Does this answer only apply to Linq To SQL? – philreed Jun 18 '14 at 12:51 ...
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CSS force image resize and keep aspect ratio

I am working with images, and I ran across a problem with aspect ratios. 23 Answers 23...
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What is Objective C++? [closed]

What is Objective C++ and can I use this language in Xcode? 3 Answers 3 ...