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Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
I am working with the pandas library and I want to add two new columns to a dataframe df with n columns (n > 0).
These new columns result from the application of a function to one of the columns in the dataframe.
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How to debug Spring Boot application with Eclipse?
My Spring Boot webapp is running just fine, and I'd like to debug it through Eclipse.
13 Answers
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Java 8 NullPointerException in Collectors.toMap
The Java 8 Collectors.toMap throws a NullPointerException if one of the values is 'null'. I don't understand this behaviour, maps can contain null pointers as value without any problems. Is there a good reason why values cannot be null for Collectors.toMap ?
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The type or namespace name could not be found [duplicate]
I have a C# solution with several projects in Visual Studio 2010 .
One is a test project (I'll call it " PrjTest "), the other is a Windows Forms Application project (I'll call it " PrjForm "). There is also a third project referenced by PrjForm, which it is able to reference and use successfu...
Make Vim show ALL white spaces as a character
I can't find a way to make Vim show all white spaces as a character.
All I found was about tabs, trailing spaces etc.
23 An...
Find and replace with sed in directory and sub directories
I run this command to find and replace all occurrences of 'apple' with 'orange' in all files in root of my site:
7 Answers
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What is data oriented design?
I was reading this article , and this guy goes on talking about how everyone can greatly benefit from mixing in data oriented design with OOP. He doesn't show any code samples, however.
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Why does std::getline() skip input after a formatted extraction?
I have the following piece of code that prompts the user for their name and state:
3 Answers
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Missing Maven dependencies in Eclipse project
We have a project set up with maven for resolving dependancies. It usually works fine, but now I am trying to compile and run it on a new PC and I have problem with missing dependencies in Eclipse.
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Split string with dot as delimiter
I am wondering if I am going about splitting a string on a . the right way? My code is:
13 Answers
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