Function distinct

Emits unique values, with optional key selector.

import {pipe, distinct} from 'iter-ops';

const i = pipe(
    [1, 1, 1, 2, 2, 2, 3, 3],
    distinct() // selector not needed for simple types
);

console.log(...i); //=> 1, 2, 3
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With optional selector function:

import {pipe, distinct} from 'iter-ops';

const i = pipe(
    [{a: 1}, {a: 1}, {a: 2}, {a: 2}],
    distinct(v => v.a)
);

console.log(...i); //=> {a: 1}, {a: 2}
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