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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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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 ...
Multiple contexts with the same path error running web service in Eclipse using Tomcat
This is the error that I got when I created my first Axis2 web service using Eclipse. After I wrote the class, I created the web service with Apache Axis2. When I click the start server button in eclipse it gives an error message:
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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 ...
The model used to open the store is incompatible with the one used to create the store
...StoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:nil error:&error])
Replace nil options with @{NSMigratePersistentStoresAutomaticallyOption:@YES, NSInferMappingModelAutomaticallyOption:@YES} (actually provided in the commented code in that method)
Here you go, have fun!
P...
Why, Fatal error: Class 'PHPUnit_Framework_TestCase' not found in …?
Why I'm getting this PHP error?
13 Answers
13
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Request format is unrecognized for URL unexpectedly ending in
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i kept it as is and for now the error seems to have gone away. if i see the error again i'll move the webservices configs into the webserver section.
– Daniel Brink
Apr 20 '10 at 8:08
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Add missing dates to pandas dataframe
... of different index length where joins, merges etc. almost always leads to errors such as a column full of NaNs.
– user3661992
Sep 7 at 10:24
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“The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine” Error in importing
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Install the following to resolve your error.
2007 Office System Driver: Data Connectivity Components
AccessDatabaseEngine.exe (25.3 MB)
This download will install a set of components that facilitate the
transfer of data between existing Microsoft Office f...