effect-io-ai

Package: effect
Module: Record

Record.fromIterableWith

Takes an iterable and a projection function and returns a record. The projection function maps each value of the iterable to a tuple of a key and a value, which is then added to the resulting record.

Example (Building a record from mapped iterable values)

import { Record } from "effect"
import * as assert from "node:assert"

const input = [1, 2, 3, 4]

assert.deepStrictEqual(
  Record.fromIterableWith(input, (a) => [String(a), a * 2]),
  { "1": 2, "2": 4, "3": 6, "4": 8 }
)

Signature

declare const fromIterableWith: { <A, K extends string | symbol, B>(f: (a: A) => readonly [K, B]): (self: Iterable<A>) => Record<ReadonlyRecord.NonLiteralKey<K>, B>; <A, K extends string | symbol, B>(self: Iterable<A>, f: (a: A) => readonly [K, B]): Record<ReadonlyRecord.NonLiteralKey<K>, B>; }

Source

Since v2.0.0