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Apache Spark: map vs mapPartitions?
... and mapPartitions method?
The method map converts each element of the source RDD into a single element of the result RDD by applying a function. mapPartitions converts each partition of the source RDD into multiple elements of the result (possibly none).
And does flatMap behave like map or li...
What do I return if the return type of a method is Void? (Not void!)
Due to the use of Generics in Java I ended up in having to implement a function having Void as return type:
6 Answers
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Python integer division yields float
Is this intended? I strongly remember earlier versions returning int/int=int ? What should I do, is there a new division operator or must I always cast?
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Adding console.log to every function automatically
Is there a way to make any function output a console.log statement when it's called by registering a global hook somewhere (that is, without modifying the actual function itself) or via some other means?
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How to tell Maven to disregard SSL errors (and trusting all certs)?
I frequently need to run "mvn" command :
4 Answers
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Is there a simple way to remove unused dependencies from a maven pom.xml?
I have a large Maven project with many modules and many pom.xml files. The project has changed and I suspect the pom's contain some unnecessary dependencies. Is there is a command which removes any unused dependencies from a pom?
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How to override Backbone.sync?
I'm trying out Backbone.js, and one of the things I'm trying is to make a call to a remote API, so I need to be able to override Backbone.sync, as I understand the documentation .
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CMake: Print out all accessible variables in a script
I'm wondering if there is a way to print out all accessible variables in CMake. I'm not interested in the CMake variables - as in the --help-variables option. I'm talking about my variables that I defined, or the variables defined by included scripts.
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How does Junit @Rule work?
I want to write test cases for a bulk of code, I would like to know details of JUnit @Rule annotation feature, so that I can use it for writing test cases. Please provide some good answers or links, which give detailed description of its functionality through a simple example.
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How to query nested objects?
I have a problem when querying mongoDB with nested objects notation:
3 Answers
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