Martin Senne

Martin Senne has asked 13 questions and find answers to 19 problems.

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Martin Senne questions

Return most specific type given a method parameter
Relation of free monad and AST
Why does a for-comprehension used with an extractor of type tuple result in a compile warning on `filter`?
Spark and SparkSQL: How to imitate window function?
Is there a way to add extra metadata for Spark dataframes?
What is going wrong with `unionAll` of Spark `DataFrame`?
How to define schema for custom type in Spark SQL?
SparkSQL: How to deal with null values in user defined function?

Martin Senne answers

Is .parallelize(...) a lazy operation in Apache Spark?
How to explain TreeNode type restriction and self-type in Spark's TreeNode?
For comprehension: how to run Futures sequentially
How to do Slick configuration via application.conf from within custom sbt task?
Scala Pattern matching: Are parametrized extractor objects possible?
How to match Dataframe column names to Scala case class attributes?
What is the best way to define custom methods on a DataFrame?
How do `map` and `reduce` methods work in Spark RDDs?
Change nullable property of column in spark dataframe
Trait vs Abstract Class in Scala