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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 sumOf
sumOf<T>(
array: Iterable<T>,
selector: (el: T) => number
): number

Applies the given selector to all elements in the given collection and calculates the sum of the results.

Examples

Example 1

import { sumOf } from "@std/collections/sum_of";
import { assertEquals } from "@std/assert/assert_equals";

const people = [
  { name: "Anna", age: 34 },
  { name: "Kim", age: 42 },
  { name: "John", age: 23 },
];
const totalAge = sumOf(people, (i) => i.age);

assertEquals(totalAge, 99);

Type Parameters

T

Parameters

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

Return Type

number

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Add Package

deno add jsr:@std/collections

Import symbol

import { sumOf } from "@std/collections/sum_of";
or

Import directly with a jsr specifier

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