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How can I create a correlation matrix in R?

... @AgustínIndaco - I have updated my answer with a further example. The image function doesn't automatically take the row and column names, so this must be added. – Marc in the box Apr 11 '17 at 16:36 ...
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How is a CRC32 checksum calculated?

...riginal number we had) I know this is a leap of faith but this is beyond my capability as a line-programmer. If you are a hard-core CS-student or engineer I challenge to break this down. Everyone will benefit from this analysis. So to work out a full example: Original message :...
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Are tuples more efficient than lists in Python?

...e access is slower than list access. However, trying that in Python 2.7 on my Windows 7 PC, the difference is only 10%, so unimportant. – ToolmakerSteve Dec 15 '13 at 19:57 53 ...
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Resize image proportionally with MaxHeight and MaxWidth constraints

... run Save method if you don't need to save the image. This is exactly what my ScaleImage method does - returns image without saving it. – Alex Aza Aug 25 '16 at 7:29 ...
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Error handling in C code

...about not mixing styles. I'm curious about your reasoning on asserts. If my function documentation says "argument X must not be NULL" or "Y must be a member of this enum", than what is wrong with assert(X!=NULL); or assert(Y<enumtype_MAX); ? See this answer on programmers and the question it l...
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How to access accelerometer/gyroscope data from Javascript?

...ross a few websites that seems to access the accelerometer or gyroscope on my laptop, detecting changes in orientation or movement. ...
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How do negative margins in CSS work and why is (margin-top:-5 != margin-bottom:5)?

... to keep things simple, but I agree, this is possibly the worst written of my answers! – Rich Bradshaw Jul 16 '12 at 7:11 2 ...
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How do I pull files from remote without overwriting local files?

...tion where I don't want to commit the code, but I would like to keep it in my local machine, these set of commands is really helpful for this. – Vargan Feb 27 '15 at 11:30 ...
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What is tail recursion?

... My favourite answer as well due to including the implication for the stack size. – njk2015 Jul 17 '17 at 13:26 ...
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What does the caret operator (^) in Python do?

... So that means I can craft my own operator which allows int concatenation with strings? man, python is way complex than I thought – K DawG Oct 18 '13 at 13:47 ...