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What's the algorithm to calculate aspect ratio?

...8:1. If so, what you need to do is find the greatest common divisor (GCD) and divide both values by that. The GCD is the highest number that evenly divides both numbers. So the GCD for 6 and 10 is 2, the GCD for 44 and 99 is 11. For example, a 1024x768 monitor has a GCD of 256. When you divide bot...
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Moving average or running mean

... UPD: more efficient solutions have been proposed by Alleo and jasaarim. You can use np.convolve for that: np.convolve(x, np.ones((N,))/N, mode='valid') Explanation The running mean is a case of the mathematical operation of convolution. For the running mean, you slide a win...
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How do I change the text of a span element using JavaScript?

...y, which means that a lot of people have probably taken over this solution and might have introduced unnecessary xss leaks. Could you consider updating your answer to use textContent instead, such that new people will be encouraged to use proper and secure methods? – Tiddo ...
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How to restart Activity in Android

How do I restart an Android Activity ? I tried the following, but the Activity simply quits. 21 Answers ...
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How to include a quote in a raw Python string

...oted strings in your string (an extremely unlikely case), you can't do it, and you'll have to use non-raw strings with escapes. share | improve this answer | follow ...
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CSS Div stretch 100% page height

I have a navigation bar on the left hand side of my page, and I want it to stretch to 100% of the page height. Not just the height of the viewport, but including the areas hidden until you scroll. I don't want to use javascript to accomplish this. ...
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Maximum Year in Expiry Date of Credit Card

...ds they issue will expire. In fact they have been issuing cards for longer and longer periods of time. If you're trying to determine how far out into the future you should accommodate expiration dates for, err on the safe side and give your customers many years to choose from. That way you future pr...
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Converting newline formatting from Mac to Windows

...In conclusion, simply replace every occurence of \n by \r\n. Both unix2dos and dos2unix are not by default available on Mac OSX. Fortunately, you can simply use Perl or sed to do the job: sed -e 's/$/\r/' inputfile > outputfile # UNIX to DOS (adding CRs) sed -e 's/\r$//' inputfil...
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Why can I throw null in Java? [duplicate]

...erException. In other words, throw checks that its argument is nonnull, and if it is null, it throws a NullPointerException. JLS 14.18 specifies this behavior: If evaluation of the Expression completes normally, producing a null value, then an instance V' of class NullPointerException is cre...
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When should I use a List vs a LinkedList

...his should not be an accepted answer. As I was learning I did some tests and felt like sharing them. Original answer... I found interesting results: // Temporary class to show the example class Temp { public decimal A, B, C, D; public Temp(decimal a, decimal b, decimal c, decimal d) ...