What is a lens in Scala

0 votes
Can anyone explain what lens in Scala?
Jul 26, 2019 in Apache Spark by Sahan
 • 1,566 views

1 answer to this question.

0 votes

Hi,

A lens is an abstraction from functional programming. It makes updating complex immutable nested objects easier for us.

For lenses, we have three kinds of available implementations:

  • scalaz.Lens
  • Quicklens- Has more functionality than a Sauron
  • Sauron
answered Jul 26, 2019 by Gitika
 • 65,730 points

Related Questions In Apache Spark

0 votes
1 answer

What is Executor Memory in a Spark application?

Every spark application has same fixed heap ...READ MORE

answered Jan 5, 2019 in Apache Spark by Frankie
 • 9,830 points • 7,102 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
 • 65,730 points • 1,334 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
 • 65,730 points • 5,197 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
 • 65,730 points • 1,236 views
+1 vote
2 answers

How do I get number of columns in each line from a delimited file??

Instead of spliting on '\n'. You should ...READ MORE

answered Aug 7, 2019 in Apache Spark by ashish
 • 6,823 views
+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 • 13,472 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 • 4,381 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 • 116,230 views
0 votes
1 answer

What is a Parquet file in Spark?

Hey, Parquet is a columnar format file supported ...READ MORE

answered Jul 2, 2019 in Apache Spark by Gitika
 • 65,730 points • 1,871 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
 • 65,730 points • 2,051 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
"PMP®","PMI®", "PMI-ACP®" and "PMBOK®" are registered marks of the Project Management Institute, Inc. MongoDB®, Mongo and the leaf logo are the registered trademarks of MongoDB, Inc.