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Replace a value in a data frame based on a conditional (`if`) statement
In the R data frame coded for below, I would like to replace all of the times that B
appears with b .
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How to avoid .pyc files?
Can I run the python interpreter without generating the compiled .pyc files?
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How can I dynamically set the position of view in Android?
How can I change the position of view through code? Like changing its X, Y position. Is it possible?
12 Answers
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psql: FATAL: role “postgres” does not exist
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Getting ssh to execute a command in the background on target machine
This is a follow-on question to the How do you use ssh in a shell script? question. If I want to execute a command on the remote machine that runs in the background on that machine, how do I get the ssh command to return? When I try to just include the ampersand (&) at the end of the command it ...
ImportError in importing from sklearn: cannot import name check_build
I am getting the following error while trying to import from sklearn:
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What does collation mean?
What does collation mean in SQL, and what does it do?
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How can I find out what FOREIGN KEY constraint references a table in SQL Server?
I am trying to drop a table but getting the following message:
15 Answers
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C/C++ check if one bit is set in, i.e. int variable
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How can I archive git branches?
I have some old branches in my git repository that are no longer under active development. I would like to archive the branches so that they don't show up by default when running git branch -l -r . I don't want to delete them, because I want to keep the history. How can I do this?
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