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Sorting arrays in NumPy by column
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@steve's answer is actually the most elegant way of doing it.
For the "correct" way see the order keyword argument of numpy.ndarray.sort
However, you'll need to view your array as an array with fields (a structured array).
The "correct" ...
Changing a specific column name in pandas DataFrame
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A one liner does exist:
In [27]: df=df.rename(columns = {'two':'new_name'})
In [28]: df
Out[28]:
one three new_name
0 1 a 9
1 2 b 8
2 3 c 7
3 4 d 6
4 5 e 5
Follo...
How to find all combinations of coins when given some dollar value
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I looked into this once a long time ago, and you can read my little write-up on it. Here’s the Mathematica source.
By using generating functions, you can get a closed-form constant-time solution to the problem. Graham, Knuth, and Patashni...
How to delete a module in Android Studio
Is there a way to delete a module within Android Studio?
When I right click on a module I can't find an option for deletion, is it elsewhere?
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Describe the architecture you use for Java web applications? [closed]
...r older projects, 5 for newer projects)
Business layer: Spring
DAO's : Ibatis
Database : Oracle
We use Sping transaction support, and start transactions upon entering the service layer, propagating down to the DAO call's. The Service layer has the most bussines model knowledge, and the DAO's do re...
Mysql error 1452 - Cannot add or update a child row: a foreign key constraint fails
...m trying to add a foreign key to one table that references another, but it is failing for some reason. With my limited knowledge of MySQL, the only thing that could possibly be suspect is that there is a foreign key on a different table referencing the one I am trying to reference.
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Smallest data URI image possible for a transparent image
..., if you then want your transparent GIF to have a background-image, then this is impossible. For some reason, some GIFs such as the following prevent CSS backgrounds (in some browsers).
Shorter (but unstable - 74 bytes)
data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
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Initializing a struct to 0
If I have a struct like this:
3 Answers
3
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How do I find the next commit in git? (child/children of ref)
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To list all the commits, starting from the current one, and then its child, and so on - basically standard git log, but going the other way in time, use something like
git log --reverse --ancestry-path 894e8b4e93d8f3^..master
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Eclipse error: “The import XXX cannot be resolved”
..., via CVS.
Both don't work, while on my collegue's Eclipse do.
The problem is that, for each import of an Hibernate class, Eclipse says:
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