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How do I represent a hextile/hex grid in memory?

...Amit Patel has posted an amazing page on this topic. It's so comprehensive and wonderful that it needs to be the definitive answer to this question: Hexagonal Grids share | improve this answer ...
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How can I check if a string represents an int, without using try/except?

... is an int, so does your program. If Python changes, so does your program, and without changing a single line of code. There's some value in that. It might be the right thing to do depending on the circumstances. – Shavais Oct 8 '14 at 16:07 ...
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How do I make a list of data frames?

How do I make a list of data frames and how do I access each of those data frames from the list? 8 Answers ...
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HTTP 1.0 vs 1.1

...ould somebody give me a brief overview of the differences between HTTP 1.0 and HTTP 1.1? I've spent some time with both of the RFCs, but haven't been able to pull out a lot of difference between them. Wikipedia says this: ...
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Why do enum permissions often have 0, 1, 2, 4 values?

Why are people always using enum values like 0, 1, 2, 4, 8 and not 0, 1, 2, 3, 4 ? 7 Answers ...
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What would cause an algorithm to have O(log n) complexity?

My knowledge of big-O is limited, and when log terms show up in the equation it throws me off even more. 6 Answers ...
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O(nlogn) Algorithm - Find three evenly spaced ones within binary string

I had this question on an Algorithms test yesterday, and I can't figure out the answer. It is driving me absolutely crazy, because it was worth about 40 points. I figure that most of the class didn't solve it correctly, because I haven't come up with a solution in the past 24 hours. ...
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Difference between map, applymap and apply methods in Pandas

...rame’s apply method does exactly this: In [116]: frame = DataFrame(np.random.randn(4, 3), columns=list('bde'), index=['Utah', 'Ohio', 'Texas', 'Oregon']) In [117]: frame Out[117]: b d e Utah -0.029638 1.081563 1.280300 Ohio 0.647747 0.831136 -1.549481 Tex...
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Where can I find the TypeScript version installed in Visual Studio?

Maybe it's obvious, but I checked everywhere (besides the right place) and googled it. Nothing. 14 Answers ...
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Why does 2 mod 4 = 2?

...ion. My term does not start for two more weeks so I can't ask a professor, and the suspense would kill me. 19 Answers ...