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Mutations

Insert an 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 and elem is the value as expected.
If key is not in the map, then ok is false and 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. The user struct has a scheduledForDeletion field that determines if they are scheduled for deletion or not.

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.

Like slices, maps are reference types. When a map is passed into a function, we can make changes to the original – we don't have a copy.