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Understanding what 'type' keyword does in Scala
I am new to Scala and I could not really find a lot about the type keyword. I am trying to understand what the following expression may mean:
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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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How to publish a website made by Node.js to Github Pages?
... as the server. As I know, the node.js file should start working by typing commands in terminal, so I'm not sure if Github Pages supports node.js-hosting. So what should I do?
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DLL and LIB files - what and why?
I know very little about DLL's and LIB's other than that they contain vital code required for a program to run properly - libraries. But why do compilers generate them at all? Wouldn't it be easier to just include all the code in a single executable? And what's the difference between DLL's and LIB's...
How Do I Fetch All Old Items on an RSS Feed?
I've been experimenting with writing my own RSS reader. I can handle the "parse XML" bit. The thing I'm getting stuck on is "How do I fetch older posts?"
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Why does the JVM still not support tail-call optimization?
Two years after does-the-jvm-prevent-tail-call-optimizations , there seems to be a prototype implementation and MLVM has listed the feature as "proto 80%" for some time now.
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How to correctly close a feature branch in Mercurial?
I've finished working on a feature branch feature-x . I want to merge results back to the default branch and close feature-x in order to get rid of it in the output of hg branches .
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A migration to add unique constraint to a combination of columns
What I need is a migration to apply unique constraint to a combination of columns. i.e. for a people table, a combination of first_name , last_Name and Dob should be unique.
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