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@std/collections@0.215.0

latest
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It is unknown whether this package works with Browsers
It is unknown whether this package works with Deno
It is unknown whether this package works with Node.js
It is unknown whether this package works with Cloudflare Workers
It is unknown whether this package works with Bun
•JSR Score70%•
Downloads1/wk
•
Published2 years ago (0.215.0)
function slidingWindows
slidingWindows<T>(
array: readonly T[],
size: number,
unnamed 2?: { step?: number; partial?: boolean; }
): T[][]

Generates sliding views of the given array of the given size and returns a new array containing all of them.

If step is set, each window will start that many elements after the last window's start. (Default: 1)

If partial is set, windows will be generated for the last elements of the collection, resulting in some undefined values if size is greater than 1.

Examples

Example 1

import { slidingWindows } from "@std/collections/sliding_windows";
import { assertEquals } from "@std/assert/assert_equals";
const numbers = [1, 2, 3, 4, 5];

const windows = slidingWindows(numbers, 3);
assertEquals(windows, [
  [1, 2, 3],
  [2, 3, 4],
  [3, 4, 5],
]);

const windowsWithStep = slidingWindows(numbers, 3, { step: 2 });
assertEquals(windowsWithStep, [
  [1, 2, 3],
  [3, 4, 5],
]);

const windowsWithPartial = slidingWindows(numbers, 3, { partial: true });
assertEquals(windowsWithPartial, [
  [1, 2, 3],
  [2, 3, 4],
  [3, 4, 5],
  [4, 5],
  [5],
]);

Type Parameters

T

Parameters

array: readonly T[]
size: number
optional
unnamed 2: { step?: number; partial?: boolean; }

Return Type

T[][]

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Add Package

deno add jsr:@std/collections

Import symbol

import { slidingWindows } from "@std/collections";
or

Import directly with a jsr specifier

import { slidingWindows } from "jsr:@std/collections";