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Replace a value in a data frame based on a conditional (`if`) statement
... Short addition: The usage of %in% only really helps if you have a set on the right side, as c("B","C"). Doing junk$nm[junk$nm == "B"] is the better way.
– Thilo
Apr 28 '11 at 20:14
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Learning about LINQ [closed]
... you want some practice on LINQ with exercises and answers, really easy to set up and, in my opinion, awesome:
https://github.com/walkhard/linq-exercises
Download from git, open in Visual Studio. Your job is to make the tests pass.
[disclosure: i learned some linq from it and I contribute to the ...
Execute method on startup in Spring
...e application starts for the first time? I know that I can do the trick of setting a method with @Scheduled annotation and it executes just after the startup, but then it will execute periodically.
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Do we still need end slashes in HTML5?
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How to define a custom ORDER BY order in mySQL
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Can javax.persistence.Query.getResultList() return null?
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Just wrap it in an Optional.ofNullable() and you're set.
– de.la.ru
Sep 22 '17 at 14:01
I belie...
Python constructor and default value [duplicate]
...e wordList and adjacencyList variable is shared between all instances of Node.
4 Answers
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In Python, what's the difference between 'except Exception as e' and 'except Exception, e' [duplicat
... changes intended to help eliminate ambiguities in Python's grammar, simplify exception classes, simplify garbage collection for exceptions and reduce the size of the language in Python 3.0.
PEP 3110: "Catching Exceptions in Python 3000"
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How to grep a string in a directory and all its subdirectories? [duplicate]
How to grep a string or a text in a directory and all its subdirectories'files in LINUX ??
2 Answers
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what is Segmentation fault (core dumped)? [duplicate]
I am trying to write a C program in linux that having sqrt of the argument, Here's the code:
1 Answer
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