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How to get item's position in a list?
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12 Answers
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Simple regular expression for a decimal with a precision of 2
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Why does range(start, end) not include end?
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Because it's more common to call range(0, 10) which returns [0,1,2,3,4,5,6,7,8,9] which contains...
How to use R's ellipsis feature when writing your own function?
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I read answers and comments and I see that few things weren't mentioned:
data.frame uses lis...
Logical operators for boolean indexing in Pandas
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When you say
(a['x']==1) and (a['y']==10)
You are implicitly asking Python to convert (a['x'...
Installing specific package versions with pip
I'm trying to install version 1.2.2 of the MySQL_python adaptor, using a fresh virtualenv created with the --no-site-packages option. The current version shown in PyPi is 1.2.3 . Is there a way to install the older version? I found an article stating that this should do it:
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Assign multiple columns using := in data.table, by group
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This now works in v1.8.3 on R-Forge. Thanks for highlighting it!
x <- data.table(a = 1:3, ...
What does this square bracket and parenthesis bracket notation mean [first1,last1)?
I have seen number ranges represented as [first1,last1) and [first2,last2) .
4 Answers
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Regular expression to match any character being repeated more than 10 times
...le regular expression to match the same character being repeated more than 10 or so times. So for example, if I have a document littered with horizontal lines:
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