toMap(keySelector, elementSelector)

Create a new Map from an Enumerable.

Arguments

• keySelector (function): function that return a key for each element.
• elementSelector (function): function that return a value for each element.

Returns

(Map): New Map created from an Enumerable.

Example

const map = Enumerable
                  .from([1, 2, 3])
                  .toMap(x => x * 2, x => x * 4);
// map === Map (3) {2 => 4, 4 => 8, 6 => 12}