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Apache Spark: map vs mapPartitions?
What's the difference between an RDD's map and mapPartitions method? And does flatMap behave like map or like mapPartitions ? Thanks.
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Understanding the Event Loop
I am thinking about it and this is what I came up with:
3 Answers
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Check whether a path is valid in Python without creating a file at the path's target
I have a path (including directory and file name).
I need to test if the file-name is a valid, e.g. if the file-system will allow me to create a file with such a name.
The file-name has some unicode characters in it.
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What's the difference between “groups” and “captures” in .NET regular expressions?
I'm a little fuzzy on what the difference between a "group" and a "capture" are when it comes to .NET's regular expression language. Consider the following C# code:
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Run R script from command line
I have a file, called a.r , it has a chmod of 755,
7 Answers
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How to access property of anonymous type in C#?
I have this:
5 Answers
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How to loop through all but the last item of a list?
I would like to loop through a list checking each item against the one following it.
6 Answers
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std::vector performance regression when enabling C++11
I have found an interesting performance regression in a small C++ snippet, when I enable C++11:
1 Answer
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Java 8 Streams: multiple filters vs. complex condition
Sometimes you want to filter a Stream with more than one condition:
4 Answers
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ByteBuffer.allocate() vs. ByteBuffer.allocateDirect()
To allocate() or to allocateDirect() , that is the question.
4 Answers
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