map_id

The function returns a list with the Ids of all the things in the set.

// Take as example:
my_set.map_id();

// This is a fast shortcut for:
my_set.map(|item| item.id());

This function does not generate a change.

set.map_id()

None

A list with the Ids for all the things in the original set.

This code shows an example using map_id():

.users = set({name: "Iris", age: 9}, {name: "Sasha", age: 37});

// returns a list with Ids
.users.map_id();

Example return value in JSON format