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@std/collections@0.215.0

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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 distinctBy
distinctBy<T, D>(
array: Iterable<T>,
selector: (el: T) => D
): T[]

Returns all elements in the given array that produce a distinct value using the given selector, preserving order by first occurrence.

Examples

Example 1

import { distinctBy } from "@std/collections/distinct_by";
import { assertEquals } from "@std/assert/assert_equals";

const names = ["Anna", "Kim", "Arnold", "Kate"];
const exampleNamesByFirstLetter = distinctBy(names, (it) => it.charAt(0));

assertEquals(exampleNamesByFirstLetter, ["Anna", "Kim"]);

Type Parameters

T
D

Parameters

array: Iterable<T>
selector: (el: T) => D

Return Type

T[]

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Add Package

deno add jsr:@std/collections

Import symbol

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

Import directly with a jsr specifier

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