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How do I uniquely identify computers visiting my web site?

...on that they will transmit to websites upon request. We implemented one possible fingerprinting algorithm, and collected these fingerprints from a large sample of browsers that visited our test side, panopticlick.eff.org. We observe that the distribution of our finger- print contains at l...
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Node.js: How to send headers with form data using request module?

...encoded' }, uri: 'http://myUrl', body: formData, method: 'POST' }, function (err, res, body) { //it works! }); share | improve this answer | follow ...
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Android ListView headers

...wo. getItemViewType should return what type of View we have at the input position. Android will then take care of passing you the right type of View in convertView automatically. Here what the result of the code below looks like: First we have an interface that our two list item types will ...
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How do emulators work and how are they written? [closed]

...instruction, you compile this list of operations to machine code for your host platform, then you cache this compiled code and execute it. Then when you hit a given instruction group again, you only have to execute the code from the cache. (BTW, most people don't actually make a list of instructio...
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Client-server synchronization pattern / algorithm?

...at how distributed change management works. Look at SVN, CVS and other repositories that manage deltas work. You have several use cases. Synchronize changes. Your change-log (or delta history) approach looks good for this. Clients send their deltas to the server; server consolidates and distri...
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iOS: Compare two dates

...il, the behavior is undefined and may change in future versions of Mac OS X. Return Value If: The receiver and anotherDate are exactly equal to each other, NSOrderedSame The receiver is later in time than anotherDate, NSOrderedDescending The receiver is earlier...
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Why is C so fast, and why aren't other languages as fast or faster? [closed]

...real programmers" write in C, and that C is so much faster because it's "close to the machine." Leaving the former assertion for another post, what is special about C that allows it to be faster than other languages? Or put another way: what's to stop other languages from being able to compile down ...
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printf format specifiers for uint32_t and size_t

... Sounds like you're expecting size_t to be the same as unsigned long (possibly 64 bits) when it's actually an unsigned int (32 bits). Try using %zu in both cases. I'm not entirely certain though. share | ...
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Java's Virtual Machine and CLR

... / 2) is performed by pushing operands onto the "stack" and then popping those operands off the stack whenever an instruction (add, divide, etc) needs to consume those operands. Each instruction pushes its results back onto the stack. It's a convenient way to implement a virtual machine, because pr...
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docker mounting volumes on host

...ainer and store any files created or edited inside that directory on your hosts disk outside the container file structure, bypassing the union file system. The idea is that your volumes can be shared between your docker containers and they will stay around as long as there's a container (running or...