Top "Scala" questions

Array initializing in Scala

I'm new to Scala ,just started learning it today.I would like to know how to initialize an array in …

scala array-initialization

Scala: join an iterable of strings

How do I "join" an iterable of strings by another string in Scala? val thestrings = Array("a","b","c") val …

string scala

I want to get the type of a variable at runtime

I want to get the type of a variable at runtime. How do I do this?

scala reflection

Scala check if element is present in a list

I need to check if a string is present in a list, and call a function which accepts a boolean …

string list scala find

How to create a DataFrame from a text file in Spark

I have a text file on HDFS and I want to convert it to a Data Frame in Spark. I …

scala apache-spark dataframe apache-spark-sql rdd

Best way to parse command-line parameters?

What's the best way to parse command-line parameters in Scala? I personally prefer something lightweight that does not require external …

scala command-line command-line-parsing

How do I check for equality using Spark Dataframe without SQL Query?

I want to select a column that equals to a certain value. I am doing this in scala and having …

scala apache-spark dataframe apache-spark-sql

How to parse JSON in Scala using standard Scala classes?

I am using the build in JSON class in Scala 2.8 to parse JSON code. I don't want to use the …

json scala

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. (…

performance scala apache-spark rdd

Add jars to a Spark Job - spark-submit

True ... it has been discussed quite a lot. However there is a lot of ambiguity and some of the answers …

java scala apache-spark jar spark-submit