associate method

Creates a new Map by associating each element in the Iterable with a key-value pair.

The function takes a key parameter and a value parameter, both representing functions that define the key and value for each element in the Iterable. It uses the fromIterable constructor of the Map class to create a new Map by associating each element in the Iterable with the key-value pair generated by the key and value functions.

Returns a new Map containing the associations between elements and key-value pairs.

Example:

List<String> names = ['Alice', 'Bob', 'Charlie'];
Map<String, int> nameLengths = names.associate((name) => name, (name) => name.length);
print(nameLengths); // Output: {Alice: 5, Bob: 3, Charlie: 7}