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Add column with constant value to pandas dataframe [duplicate]

... The reason this puts NaN into a column is because df.index and the Index of your right-hand-side object are different. @zach shows the proper way to assign a new column of zeros. In general, pandas tries to do as much alignment of indices as possible. One downside is that when indice...
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Android studio: new project vs new module

Android Studio uses the concept of modules , whereas other IDEs like Eclipse use projects . However AS File menu has the option to create a New Module as well as a new Project . ...
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Checkout old commit and make it a new commit [duplicate]

On Git, say I mess up my commits, and I want to make the version 3 commits ago as the new version. If I do git checkout xxxx , it creates a new branch and it seems like I can only merge it? Could I make this the new "master version"? ...
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Git submodule head 'reference is not a tree' error

...that is pointing to an invalid commit: the submodule commit remained local and when I try to fetch it from another repo I get: ...
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Generating statistics from Git repository [closed]

... from a git repository. I've seen this feature on some code hosting sites, and they contained information like... 11 Answer...
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Benefit of using Parcelable instead of serializing object

As I understand, Bundle and Parcelable belongs to the way Android performs serialization in. It is used for example in passing data between activities. But I wonder, if there are any benefits in using Parcelable instead of classic serialization in case of saving state of my business objects to...
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HTML5 record audio to file

What I ultimately want to do is record from the user's microphone, and upload the file to the server when they're done. So far, I've managed to make a stream to an element with the following code: ...
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Remove first element from $@ in bash [duplicate]

...ed into the script. However, the first argument shouldn't be looped over, and instead needs to be checked before the loop. ...
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In Bash, how can I check if a string begins with some value?

... So is there a functional difference between [[ $a == z* ]] and [[ $a == "z*" ]]? In other words: do they work differently? And what specifically do you mean when you say "$a is equal to z*"? – Niels Bom Jun 16 '15 at 10:37 ...
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Maximum execution time in phpMyadmin

... You can use code formatting to make it clear what is code and what is not as well :) – span Dec 13 '12 at 11:07 26 ...