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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 center a “position: absolute” element
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Smartest answer. I have just checked it and it works on all browsers. It does not work on IE8 but it works on IE>=9
– Roger
Dec 11 '13 at 9:43
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How to change the color of a CheckBox?
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This will automatically be used when you use CheckBox in your layouts. You should only need to manually use this class when writing custom views.
– 최봉재
Apr 12 '17 at 9:22
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In what cases will HTTP_REFERER be empty
...tched from a https URL to a different https URL.
has security software installed (antivirus/firewall/etc) which strips the referrer from all requests.
is behind a proxy which strips the referrer from all requests.
visited the site programmatically (like, curl) without setting the referrer header (se...
Window vs Page vs UserControl for WPF navigation?
...at you can add to your UI the same way you would add any other control. Usually I create a UserControl when I want to build in some custom functionality (for example, a CalendarControl), or when I have a large amount of related XAML code, such as a View when using the MVVM design pattern.
When navi...
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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Resizing an image in an HTML5 canvas
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So what do you do if all the browsers (actually, Chrome 5 gave me quite good one) won't give you good enough resampling quality? You implement them yourself then! Oh come on, we're entering the new age of Web 3.0, HTML5 compliant browsers, super ...
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...