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Check if a value exists in pandas dataframe index

I am sure there is an obvious way to do this but cant think of anything slick right now. 6 Answers ...
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Why is there “data” and “newtype” in Haskell? [duplicate]

It seems that a newtype definition is just a data definition that obeys some restrictions (e.g., only one constructor), and that due to these restrictions the runtime system can handle newtype s more efficiently. And the handling of pattern matching for undefined values is slightly different. ...
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How do I replace multiple spaces with a single space in C#?

How can I replace multiple spaces in a string with only one space in C#? 24 Answers 24...
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how to mysqldump remote db from local machine

I need to do a mysqldump of a database on a remote server, but the server does not have mysqldump installed. I would like to use the mysqldump on my machine to connect to the remote database and do the dump on my machine. ...
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python dataframe pandas drop column using int

I understand that to drop a column you use df.drop('column name', axis=1). Is there a way to drop a column using a numerical index instead of the column name? ...
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Implement C# Generic Timeout

I am looking for good ideas for implementing a generic way to have a single line (or anonymous delegate) of code execute with a timeout. ...
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Create an array with random values

How can I create an array with 40 elements, with random values from 0 to 39 ? Like 21 Answers ...
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dd: How to calculate optimal blocksize? [closed]

How do you calculate the optimal blocksize when running a dd ? I've researched it a bit and I've not found anything suggesting how this would be accomplished. ...
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What happens to a declared, uninitialized variable in C? Does it have a value?

If in C I write: 10 Answers 10 ...
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Clear android application user data

Using adb shell to clear application data 7 Answers 7 ...