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Why does multiprocessing use only a single core after I import numpy?
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150
After some more googling I found the answer here.
It turns out that certain Python modules (n...
How do you round a float to two decimal places in jruby
JRuby 1.6.x. How do you round a float to decimal places in jruby.
6 Answers
6
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How to assign colors to categorical variables in ggplot2 that have stable mapping?
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192
For simple situations like the exact example in the OP, I agree that Thierry's answer is the b...
How to access the ith column of a NumPy multidimensional array?
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>>> test[:,0]
array([1, 3, 5])
Similarly,
>>> test[1,:]
array([3, 4])
lets you access rows. This is covered in Section 1.4 (Indexing) of the NumPy reference. This is quick, at least in my experience. It's certainly much quicker ...
How to create a colored 1x1 UIImage on the iPhone dynamically?
I would like to create a 1x1 UIImage dynamically based on a UIColor.
6 Answers
6
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git: Apply changes introduced by commit in one repo to another repo
I have a repo1 and repo2 on local machine. They are very similar, but the latter is some kind of other branch ( repo1 is not maintained anymore).
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Rails mapping array of hashes onto single hash
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163
You could compose Enumerable#reduce and Hash#merge to accomplish what you want.
input = [{"te...
R programming: How do I get Euler's number?
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150
The R expression
exp(1)
represents e, and
exp(2)
represents e^2.
This works because exp...
Retina displays, high-res background images
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185
Do I need to double the size of the .box div to 400px by 400px to
match the new high res ...
How to use RSpec's should_raise with any kind of exception?
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expect { some_method }.to raise_error
RSpec 1 Syntax:
lambda { some_method }.should raise_error
See the documentation (for RSpec 1 syntax) and RSpec 2 documentation for more.
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