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Convert list to tuple in Python
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Peter Mortensen
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answered Oct 11 '12 at 9:15
rootroot
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Omitting the first line from any Linux command output
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22
or awk 'NR>1'
– mitchus
Oct 1 '14 at 9:54
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Annotating text on individual facet in ggplot2
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edited Aug 9 '12 at 19:24
Andy
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answered Aug 9 '12 a...
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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Split list into multiple lists with fixed number of elements
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214
I think you're looking for grouped. It returns an iterator, but you can convert the result to ...
How to add multiple files to Git at the same time
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124
To add all the changes you've made:
git add .
To commit them:
git commit -m "MY MESSAGE HERE...
How to express infinity in Ruby?
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If you use ruby 1.9.2, you can use:
>> Float::INFINITY #=> Infinity
>> 3 < Float::INFINITY #=> true
Or you can create your own constant using the following*:
I've checked that in Ruby 1.8.6, 1.8.7, and 1.9.2 you have Floa...
How do you get the width and height of a multi-dimensional array?
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247
You use Array.GetLength with the index of the dimension you wish to retrieve.
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deleting rows in numpy array
...numpy.delete method.
Suppose I have the following array x:
x = array([[1,2,3],
[4,5,6],
[7,8,9]])
To delete the first row, do this:
x = numpy.delete(x, (0), axis=0)
To delete the third column, do this:
x = numpy.delete(x,(2), axis=1)
So you could find the indices of the row...
Sort rows in data.table in decreasing order on string key `order(-x,v)` gives error on data.table 1.
...o longer necessary.
You can use DT[order(-rank(x), y)].
x y v
1: c 1 7
2: c 3 8
3: c 6 9
4: b 1 1
5: b 3 2
6: b 6 3
7: a 1 4
8: a 3 5
9: a 6 6
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