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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 .
8 Answers
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“webxml attribute is required” error in Maven
I am getting the following error:
18 Answers
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How to avoid .pyc files?
Can I run the python interpreter without generating the compiled .pyc files?
10 Answers
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What is the difference between 'E', 'T', and '?' for Java generics?
...s a List of any type
never
public <?> ? bar(? someType) {...} // error. Must use type params here
or
public class MyGeneric ? { // error
public ? getFoo() { ... } // error
...
}
It gets more confusing where they overlap. For example:
List<T> fooList; // A list ...
Best way to define error codes/strings in Java?
...web service in Java, and I am trying to figure out the best way to define error codes and their associated error strings . I need to have a numerical error code and an error string grouped together. Both the error code and error string will be sent to the client accessing the web service. For examp...
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 ...
Application Crashes With “Internal Error In The .NET Runtime”
...s. If it repeats very poorly then suspect hardware problems like soft RAM errors.
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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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Pretty Printing a pandas dataframe
...as:
pd.DataFrame({'A': [1, 2], 'B': ['a,', 'b']})
Prettytable raises an error of the form:
Error: Could not determine delimiter
The following function handles this case:
def format_for_print(df):
table = PrettyTable([''] + list(df.columns))
for row in df.itertuples():
tabl...
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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