In order to get all the keys from a Scala map, we need to use either
keySet method (to get all the keys as a set) or we can use
keys method and if you want to get the keys as an iterator, you need to use
keysIterator method. Now, lets check some examples.
Example #1:
Here,
keySet method is utilized.
Example #2:
Here,
keys method is utilized.
Example #3:
Output:
non-empty iterator
Here,
keysIterator method is utilized.
