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An efficient way to transpose a file in Bash
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115
awk '
{
for (i=1; i<=NF; i++) {
a[NR,i] = $i
}
}
NF>p { p = NF }
END {...
How to flatten only some dimensions of a numpy array
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129
Take a look at numpy.reshape .
>>> arr = numpy.zeros((50,100,25))
>>> arr.s...
undefined method `source_index' for Gem:Module (NoMethodError)
...to this problem myself while trying to upgrade an older Rails app from REE 1.8.7 to 1.9.3-p385. Oddly, Ruby 1.9.3-p327 works just fine. What it came down to was ruby-1.9.3-p385 had installed RubyGems version 2.0.2 for me, and 1.9.3-p327 has RubyGems v1.8.23 installed.
Gem.source_index has been depr...
Checkout subdirectories in Git?
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121
Sparse checkouts are now in Git 1.7.
Also see the question “Is it possible to do a sparse c...
Should I use a data.frame or a matrix?
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177
Part of the answer is contained already in your question: You use data frames if columns (vari...
List of zeros in python [duplicate]
...zeros? I want to be able to create a zeros list for each int in range(10)
8 Answers
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How to remove element from an array in JavaScript?
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12 Answers
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How do you know when to use fold-left and when to use fold-right?
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105
You can transfer a fold into an infix operator notation (writing in between):
This example fo...
Reduce left and right margins in matplotlib plot
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11 Answers
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