Leo C

Leo C has asked 0 questions and find answers to 70 problems.

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A hands-on entrepreneurial technologist specialized in building scalable backend applications, with recent R&D work in Blockchain, IoT systems (Tech stack: Scala, Akka, Spark, PostgreSQL, AWS)

Leo C questions

Leo C answers

Element-wise sum of arrays across multiple columns of a data frame in Spark / Scala?
Calculate value based on value from same column of the previous row in spark
unable to connect sql server to AWS RDS ,error 258?
Sample a different number of random rows for every group in a dataframe in spark scala
How does Scala handle isnull or ifnull in query with sqlContext
How to get the closest value from map by given key in scala?
Transforming the inner elements of a stream of collections
Unable to perform aggregation on 2 values using groupByKey in spark using scala
Comparing Lists of Strings in Scala
Does List in Scala is not homogeneous collection?