What is Streams in Scala

0 votes
Can anyone explain what streams in Scala?
Jul 25, 2019 in Apache Spark by Jina
396 views

1 answer to this question.

0 votes

Hi,

A stream is a lazy list as it evaluates elements only when it needs to. This lazy computation enhances program performance.

scala> val stream=177#::199#::69#::Stream.empty

stream: scala.collection.immutable.Stream[Int] = Stream(177, ?)

Since we don’t need the second element yet, Scala doesn’t evaluate it.

scala> val stream1=(1 to 7).toStream

stream1: scala.collection.immutable.Stream[Int] = Stream(1, ?)

scala> stream.head

Result:

res22: Int = 177

If you want to know more about Apache Spark Scala, It's highly recommended to go for the Spark Course today.

answered Jul 25, 2019 by Gitika
• 65,910 points

Related Questions In Apache Spark

0 votes
1 answer

What is ofDim in Scala?

Hey, ofDim() is a method in Scala that ...READ MORE

answered Jul 24, 2019 in Apache Spark by Gitika
• 65,910 points
4,198 views
0 votes
1 answer

What is exception propagation in Scala?

Hi, When a function experiences an exception, it ...READ MORE

answered Jul 25, 2019 in Apache Spark by Gitika
• 65,910 points
634 views
0 votes
1 answer

What is BitSet in Scala?

Hey, A BitSet is a set of non-negative ...READ MORE

answered Jul 25, 2019 in Apache Spark by Gitika
• 65,910 points
548 views
0 votes
1 answer

What is recursion in Scala function? How does it works?

Hey, A Scala function involves recursion when it ...READ MORE

answered Jul 25, 2019 in Apache Spark by Gitika
• 65,910 points
701 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
10,609 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
2,212 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
104,814 views
0 votes
1 answer

What is “Unit” and “()” in Scala?

Hey, Unit is a subtype of scala.anyval and ...READ MORE

answered Jul 24, 2019 in Apache Spark by Gitika
• 65,910 points
1,231 views
0 votes
1 answer

What is the advantage of having immutability in design for Scala programming language?

Hi, Scala uses immutability by default in most ...READ MORE

answered Jul 24, 2019 in Apache Spark by Gitika
• 65,910 points
538 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP