Maps allow you to model data with its contextual meaning. The keys of a map can give the context and the values are the specific data.
Note Define a shopping list of items you want, including how many of each item you want to buy
Note Define a star-wars characters, eg. luke skywalker, jarjar binks. The star-wars character should include a name and a skill (it doesn't matter what these are).
Use the 'get' function to return the value of a given key, eg. name. Use keywords to return a given value if you used keywords for the map keys.
In this answer we have defined three different star-wars characters, all using the same map keys.
Lets see what the specific skill luke has
When you use a keyword, eg. :name, as the key in a map, then that keyword can be used as a function call on the map to return its associated value. Maps can also act as functions too.
There are also specific functions that work on maps that give all the
keys of a map and all the
values of that map