What is the use case of map and flatMap [closed]

+1 vote
What is the major use case for map and flatMap function. I know both are used for transformation where map provided one to one output and flat map provides one-to-many output.
closed as a duplicate of: map() and flatmap()
Aug 25, 2019 in Apache Spark by anonymous
• 130 points

closed Aug 26, 2019 by Omkar 901 views
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