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How do I redirect in expressjs while passing some context?

...assedVariable = req.query.valid; // Do something with variable }); For more dynamic way you can use the url core module to generate the query string for you: const url = require('url'); app.get('/category', function(req, res) { res.redirect(url.format({ pathname:"/", query...
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Detect if Android device has Internet connection

...shurun's modification. In his answer he modified my code and made it a bit more efficient. If you connect to HttpURLConnection urlc = (HttpURLConnection) (new URL("http://clients3.google.com/generate_204") .openConnection()); and then check the responsecode for 204 retu...
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Static way to get 'Context' in Android?

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Greedy vs. Reluctant vs. Possessive Quantifiers

...atched). That still doesn't match the f in the regex, so it backtracks one more step, making the greedy quantifier match one less character again (leaving the "oo" at the end of the string unmatched). That still doesn't match the f in the regex, so it backtracks one more step (leaving the "foo" at t...
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In which order should floats be added to get the most precise result?

...in the situation where each one individually isn't affecting the total any more. So I'm still going to need more tricks. That's an extreme case, but in general adding two values of similar magnitude is more accurate than adding two values of very different magnitudes, since you "discard" fewer bits...
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GCC -fPIC option

... To be more specific, the shared library is supposed to be shared between processes, but it may not always be possible to load the library at the same address in both. If the code were not position independent, then each process wou...
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How can I tell if a DOM element is visible in the current viewport?

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What is the purpose of class methods?

...me time? Which way of calling class methods of an object is "better", or "more idiomatic": obj.cls_mthd(...) or type(obj).cls_mthd(...)? – Alexey Feb 27 '18 at 12:43 ...
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Hash function that produces short hashes?

... hash will have 40bits of entropy while a base64 60bits. So it is slightly more resistant, sorry if I was not super clear. – John L. Jegutanis Nov 13 '13 at 14:35 ...
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Restore the state of std::cout after manipulating it

... There's more to the stream state besides the flags. – jww Mar 18 '17 at 11:58 3 ...