What is Streams in Scala?

0 votes
Can anyone explain what streams in Scala?
Jul 25 in Apache Spark by Jina
43 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
answered Jul 25 by Gitika
• 25,420 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 in Apache Spark by Gitika
• 25,420 points
87 views
0 votes
1 answer

What is exception propagation in Scala?

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

answered Jul 25 in Apache Spark by Gitika
• 25,420 points
32 views
0 votes
1 answer

What is BitSet in Scala?

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

answered Jul 25 in Apache Spark by Gitika
• 25,420 points
38 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 in Apache Spark by Gitika
• 25,420 points
29 views
+1 vote
1 answer
0 votes
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
• 10,760 points
3,522 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
• 10,760 points
433 views
+1 vote
11 answers

hadoop fs -put command?

put syntax: put <localSrc> <dest> copy syntax: copyFr ...READ MORE

answered Dec 7, 2018 in Big Data Hadoop by Aditya
17,921 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 in Apache Spark by Gitika
• 25,420 points
46 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 in Apache Spark by Gitika
• 25,420 points
44 views