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Change date of git tag (or GitHub Release based on it)

...Go back in time to the commit representing the tag Delete the tag (locally and remotely) This will turn your "Release" on GitHub into a Draft that you can later delete. Re-add the same-named tag using a magic invocation that sets its date to the date of the commit. Push the new tags with fixed da...
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How accurately should I store latitude and longitude?

... Actually, equator is best case. One latitude and one longitude degree are the same size at the equator (69 miles), but one degree of longitude shrinks to zero as it approaches either of the poles. Here's a very nice explanation: nationalatlas.gov/articles/mapping/a_latl...
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How do Trigonometric functions work?

So in high school math, and probably college, we are taught how to use trig functions, what they do, and what kinds of problems they solve. But they have always been presented to me as a black box. If you need the Sine or Cosine of something, you hit the sin or cos button on your calculator and you'...
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Programmatically create a UIView with color gradient

...gColor] view.layer.insertSublayer(gradient, at: 0) Info: use startPoint and endPoint to change direction of gradient. If there are any other views added onto this UIView (such as a UILabel), you may want to consider setting the background color of those UIView’s to [UIColor clearColor] so the ...
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How do you calculate the average of a set of circular data? [closed]

... Compute unit vectors from the angles and take the angle of their average. share | improve this answer | follow | ...
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How to drop a list of rows from Pandas dataframe?

... Use DataFrame.drop and pass it a Series of index labels: In [65]: df Out[65]: one two one 1 4 two 2 3 three 3 2 four 4 1 In [66]: df.drop(df.index[[1,3]]) Out[66]: one two one 1 4 three ...
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How to create a inset box-shadow only on one side?

...second .box-inner inside, which is larger in width than the original .box, and the box-shadow is applied to that. Then, added more padding to the .text to make up for the added width. This is how the logic looks: And here's how it's done in CSS: Use max width for .inner-box to not cause .box t...
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Bash, no-arguments warning, and case decisions

... I interpreted "and" as "otherwise", assuming that the message would be some help text. But I'm sure Werner is able to figure out what that line does and whether he wants it :) – Thomas Mar 11 '10 at 19...
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C dynamically growing array

I have a program that reads a "raw" list of in-game entities, and I intend to make an array holding an index number (int) of an indeterminate number of entities, for processing various things. I would like to avoid using too much memory or CPU for keeping such indexes... ...
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Why does struct alignment depend on whether a field type is primitive or user-defined?

...ot supposed to happen. You can see it by making the struct members public and appending test code like this: var test = new RefAndTwoInt32Wrappers(); test.text = "adsf"; test.x.x = 0x11111111; test.y.x = 0x22222222; Console.ReadLine(); // <=== Breakpoint here When the...