This and the other “Deck” posts are a repurposing of flashcard study decks to Q&A blog posts. Google was not showing love to this content as a set of flashcards and I didn’t want to delete them entirely, I hope you find it useful.
What is a MapSet?
A MapSet is a Set. Sets are data structures that can contain unique elements of any kind.
How does a MapSet differ from a Map?
A Map is an associative data structure where a MapSet is not.
Can a MapSet contain duplicate values?
No. If a duplicate value is provided to a MapSet it will result in a no-op.
When do you use a MapSet?
MapSets are really fast data structures and are often used when in need of optimum search performance.
How do you create a MapSet?
Using MapSet.new/0. All data must be added to the MapSet after it is constructed.
How do you add a value to a MapSet?
Using Mapset.put/2
=> ms = MapSet.new() #MapSet<[]>
=> MapSet.put(ms, "new_value")
#MapSet<["new_value"]> How do you remove a value in a MapSet?
Using Mapset.delete/2
=> ms = MapSet.new()
=> MapSet.put(ms, "new_value")
=> MapSet.delete(ms, "new_value") How do you iterate a MapSet?
A MapSet is an Elixir Enumerable. Like other Enumerables you can use the Enum module to iterate the collection ex Enum.map/2