What methods can be used to implement a data structure like a map (or dictionary)?

In Flutter, the data structure map (dictionary) is implemented using the built-in class Map<K, V>. It is an associative array where each key corresponds to a value.

Main ways to create and use a Map:

• Map literal:

var map = {'key1': 'value1', 'key2': 'value2'};

• Using the constructor:

var map = Map<String, int>();
map['one'] = 1;
map['two'] = 2;

• You can use different implementations, for example, LinkedHashMap to preserve insertion order.

Map allows efficient storage of key-value pairs and quick retrieval of values by key.