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Why are quaternions used for rotations?
...r descriptions have good analytic behavior (this has a precisely defined meaning, but in some rather technical ways that go far beyond what's taught in normal intro classes, so I won't go into any detail). It turns out that quaternions don't have this nice behavior, and so they aren't useful, and ve...
How to test that no exception is thrown?
I know that one way to do it would be:
15 Answers
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Is there a CSS parent selector?
...!) to one of the compound selectors in a selector.
– animuson♦
Jan 29 '12 at 21:30
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The prepe...
Upgrading Node.js to latest version
So, I have Node.js installed and now when I tried to install Mongoosejs I got an error telling me that I don't have the needed version of Node.js (I have v0.4.11 and v0.4.12 is needed).
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Replace all 0 values to NA
I have a dataframe with some numeric columns. Some row has a 0 value which should be considered as null in statistical analysis. What is the fastest way to replace all the 0 value to NULL in R?
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How to insert values into C# Dictionary on instantiation?
... answered Jun 24 '09 at 16:57
Daniel EarwickerDaniel Earwicker
106k3434 gold badges190190 silver badges271271 bronze badges
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How to make a JTable non-editable
...I need no editor in no cell, so you have my vote.
– Dani Sancas
Dec 18 '14 at 12:35
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show 2 more comments
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Node.js + Nginx - What now?
I've set up Node.js and Nginx on my server. Now I want to use it, but, before I start there are 2 questions:
12 Answers
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How many random elements before MD5 produces collisions?
... of pedantism is unnecessary because it doesn't change the answer in any meaningful way.
– Kornel
Feb 16 '15 at 23:56
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How to get all of the immediate subdirectories in Python
I'm trying to write a simple Python script that will copy a index.tpl to index.html in all of the subdirectories (with a few exceptions).
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