What is Unit and in Scala

0 votes
Can anyone explain what is "Unit" and "()" in Scala?
Jul 24, 2019 in Apache Spark by Dinesh
151 views

1 answer to this question.

0 votes

Hey,

Unit is a subtype of scala.anyval and is nothing but Scala equivalent of Java void that provides the Scala with an abstraction of the Java platform. Empty tuple i.e. () in Scala is a term that represents unit value.

answered Jul 24, 2019 by Gitika
• 65,870 points

Related Questions In Apache Spark

+1 vote
3 answers

What is the difference between rdd and dataframes in Apache Spark ?

Comparison between Spark RDD vs DataFrame 1. Release ...READ MORE

answered Aug 27, 2018 in Apache Spark by shams
• 3,660 points
34,177 views
0 votes
1 answer

what are the job optimization Technics in spark and scala ?

There are different methods to achieve optimization ...READ MORE

answered Mar 18, 2019 in Apache Spark by Veer
988 views
0 votes
1 answer

What is Map and flatMap in Spark?

Hi, The map is a specific line or ...READ MORE

answered Jul 3, 2019 in Apache Spark by Gitika
• 65,870 points
1,108 views
0 votes
1 answer

How to use yield keyword in scala and why it is used instead of println?

Hi, The yield keyword is used because the ...READ MORE

answered Jul 5, 2019 in Apache Spark by Gitika
• 65,870 points
442 views
+1 vote
2 answers
+1 vote
1 answer

Hadoop Mapreduce word count Program

Firstly you need to understand the concept ...READ MORE

answered Mar 16, 2018 in Data Analytics by nitinrawat895
• 11,380 points
6,809 views
0 votes
1 answer

hadoop.mapred vs hadoop.mapreduce?

org.apache.hadoop.mapred is the Old API  org.apache.hadoop.mapreduce is the ...READ MORE

answered Mar 16, 2018 in Data Analytics by nitinrawat895
• 11,380 points
1,092 views
+2 votes
11 answers

hadoop fs -put command?

Hi, You can create one directory in HDFS ...READ MORE

answered Mar 16, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points
47,767 views
0 votes
1 answer
0 votes
1 answer

What is the difference between persist() and cache() in apache spark?

Hi, persist () allows the user to specify ...READ MORE

answered Jul 3, 2019 in Apache Spark by Gitika
• 65,870 points
2,117 views