What is function currying in Scala

0 votes
Can anyone explain with an example how currying function in Scala used?
Jul 26, 2019 in Apache Spark by Lima
805 views

1 answer to this question.

0 votes

Hi,

With Scala Currying, we can take a function that takes multiple arguments and turns it into a series of functions that take single arguments each. These come in handy working with higher-order functions. With this, we can also fill in only the arguments we have yet.

scala> def mul(a:Int,b:Int)=a*b

mul: (a: Int, b: Int)Int

scala> mul(3,4)

The output will be:

Int = 12

There is another way to do this mention below:

scala> def mul(a:Int)(b:Int)=a*b

mul: (a: Int)(b: Int)Int

scala> val mid=mul(3)(_)

mid: Int => Int = $$Lambda$1540/90644757@43fe3f7

scala> mid(4

The output will be same:

Int =12

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

answered Jul 26, 2019 by Gitika
• 65,890 points

Related Questions In Apache Spark

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
• 65,890 points
673 views
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
• 65,890 points
4,570 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
• 65,890 points
785 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
• 65,890 points
702 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
10,920 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
2,449 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
108,267 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
• 65,890 points
857 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
• 65,890 points
1,472 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