Mutations

Insert and element

m[key] = elem

Get an element

elem = m[key]

Delete an element

delete(m, key)

Check if a key exists

elem, ok := m[key]

If key is in m, then ok is true. If not, ok is false.

If key is not in the map, then elem is the zero value for the map's element type.

Assignment

It's important to keep up with privacy regulations and to respect our user's data. We need a function that will delete user records.

Complete the deleteIfNecessary function.

• If the user doesn't exist in the map, return the error not found.
• If they exist but aren't scheduled for deletion, return deleted as false with no errors.
• If they exist and are scheduled for deletion, return deleted as true with no errors and delete their record from the map.

Note on passing maps

Like slices, maps are also passed by reference into functions. This means that when a map is passed into a function we write, we can make changes to the original, we don't have a copy.