effect-io-ai

Package: effect
Module: Array

Array.cartesianWith

Computes the cartesian product of two arrays, applying a combiner to each pair.

When to use

Use to compute every combination from two arrays and immediately transform each pair into a custom result.

Details

Produces every combination of an element from self with an element from that, so the result length is self.length * that.length. Iteration visits every element of that for each element of self.

Example (Combining numbers and letters)

import { Array } from "effect"

const result = Array.cartesianWith([1, 2], ["a", "b"], (a, b) => `${a}-${b}`)
console.log(result) // ["1-a", "1-b", "2-a", "2-b"]

See

• cartesian for returning tuples instead of applying a combiner

Signature

declare const cartesianWith: { <A, B, C>(that: ReadonlyArray<B>, f: (a: A, b: B) => C): (self: ReadonlyArray<A>) => Array<C>; <A, B, C>(self: ReadonlyArray<A>, that: ReadonlyArray<B>, f: (a: A, b: B) => C): Array<C>; }

Source

Since v2.0.0