contains(item)

Determines if item is in an Enumerable.

Arguments

• item (any): item to search

Returns

(Number): number of occurrences of item in the Enumerable.

Example

Enumerable
        .from([1, 2, 3])
        .contains(4);
// 0
Enumerable
        .from([1, 2, 3, 1, 2, 1, 4])
        .contains(1);
// 3