successors | /src/iterator.ts | ahh@v0.14.0

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function successors

import { successors } from "https://deno.land/x/ahh@v0.14.0/src/iterator.ts";

successors<T extends Some<unknown>>(init: Option<T>, fn: (item: T) => Option<T>)

Creates an Iterator where each successive item is computed from the previous one.

Examples

Example 1

import { assert } from "../test_deps.ts";
import I from "./iterator.ts";

const iter = I.successors<number>(0, (i) => i + 1);

assert(iter.next() === 0);
assert(iter.next() === 1);
assert(iter.next() === 2);

Type Parameters

T extends Some<unknown>

Parameters

init: Option<T>

fn: (item: T) => Option<T>