36 Map
After reading this lesson, you will be able to
- Define a key-value structure, called
Map - Add and remove entries to
Map - Compute the union and difference of two
Maps - Manipulate the elements of a key-value structure using the
mapandflatMapfunctions - Chain multiple instances using
for-comprehension
In the previous lesson, you mastered the operations you can perform on a set. In this lesson, you’ll discover a new data structure called Map. In Scala, Map is an immutable data structure to store a set of keys, each of them associated with a value. The concept of mapping keys to values is not unique to the Scala language; some languages, such as Java, refer to it using the term hashmap; others, such as Python, call it dictionary. You’ll create ...
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