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How to prove that a problem is NP complete?
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As far as I remember, there is a theorem called the Cook-Levin theorem which states that SAT is NP-complete. That proof is quite a bit more complicated than what I outlined above and I don't think I can explain it in my own words.
– Laila Agaev
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How to get the last char of a string in PHP?
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I think this is a better solution because it allows you to modify the character, whereas the substr solution given above does not.
– cazort
Aug 19 '17 at 15:16
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how to release localhost from Error: listen EADDRINUSE
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Thanks. This was what i needed. I had pm2 installed which autostarts node app when its closed. I had to disable pm2 to autostart node.
– KlevisGjN
Feb 24 '17 at 17:28
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ViewPager.setOffscreenPageLimit(0) doesn't work as expected
...ut this in LogCat, something like:
Requested offscreen page limit 0 too small; defaulting to 1
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How to check Google Play services version?
...my application, I need to check Google Play services version (which is installed in user's device). Is it possible ? And if yes, how can I do that? I searched Google but I could not find anything!
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How to open link in new tab on html?
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The special targets all start with an underscore. blank would be the name of a frame or window. It may seem to work, because a new window or tab will probably be opened when none exists with the name 'blank', but a second click on the link shoul...
HTML tag affecting line height, how to make it consistent?
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actually I'd prefer {vertical-align: super} because it prevents some display glitches with line-height in IE8 as far as I remember. I would try not to use positioning to often if there are better alternatives. Careless top positi...
How do I insert NULL values using PDO?
...akes a variable, to reference, and doesn't pull in a value at the time of calling bindParam. I found this in a comment on the php docs:
bindValue(':param', null, PDO::PARAM_INT);
EDIT: P.S. You may be tempted to do this bindValue(':param', null, PDO::PARAM_NULL); but it did not work for everybody...
How to change fontFamily of TextView in Android
...d fonts in Android. How do I select one of the pre-defined ones? I don't really need to define my own TypeFace but all I need is something different from what it shows right now.
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How can I start an interactive console for Perl?
...ms to provide the best almost-out-of-the-box solution (you may have to install rlwrap). All third-party REPL/console solutions, including perlconsole, are cumbersome to install and often have more limitations.
– mklement0
Jul 8 '15 at 3:09
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